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The trigonometry GCSE maths revision section of Revision Maths covering: Sin, Cos, Tan, Pythagoras, Sine and Cosine Rule, Similar Triangles and Congruency.
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- Pythagoras Theorem
- Sine and Cosine Rule
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GCSE Trigonometry
From Pythagoras to the cosine rule, trigonometry is a big part of the GCSE and IGCSE maths course. This page has all of our favourite resource for mastering GCSE trigonometry!
We have split this page into Foundation tier and Higher tier for simplicity.
Other links: Year 11 Revision Guide How to get a Grade 5? How to get a Grade 7+? Circle Theorems Revision!
Thanks to Adithya for his help designing this poster.
Pythagoras and SOHCAHTOA are both in the foundation course. They are very popular topics. We recommend practicing them until you are very confident with them! They are also in the higher tier course.
Revision Videos
Worksheets: Corbett Maths Pythagoras Theorem
Corbett Maths SOHCAHTOA Practice Note: The answers to these questions can be found by clicking on the green tick at the bottom of each of these worksheets.
Self Marking Online Activities:
Transum Pythagoras Practice
Transum SOHCAHTOA Practice
The Sine Rule, Cosine Rule and Area of a Triangle with Sine are all in the higher course only . You also need to understand how to apply all the rules in 3D, this is called 3D trigonometry.
Worksheets: Corbett Maths Sine Rule Corbett Maths Cosine Rule Corbett Maths Area of a Triangle Corbett Maths 3D Trigonometry
Note: The answers to these questions can be found by clicking on the green tick at the bottom of each of these worksheets. MathsGenie Sine Rule – Markscheme MathsGenie Cosine Rule – Markscheme MathsGenie Area of Triangle with Sine – Markscheme MathsGenie 3D Trig – Markscheme
Self Marking Online Activities: Transum Sine Rule Transum Cosine Rule
Transum Area of Triangle with Sine Transum 3D Trig
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Exact trigonometric Values. GCSE Maths Past paper Questions.
Subject: Mathematics
Age range: 14-16
Resource type: Worksheet/Activity
Last updated
20 February 2024
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Please review if you find this resource helpful. It does encourage me to upload more.
This resource contains all of the Exact Trigonometric Value questions that have come up in the released Edexcel GCSE maths papers to date (Autumn 2021), arranged as a printable worksheet.
There is also reference to which paper each question came up on.
The full solutions are also included (please let me know if you spot any mistakes).
Please do leave a review if you find this useful and do let me know if you spot any mistakes.
Please do not rebrand or pass off as your own work.
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Trigonometry: GCSE Questions
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3D Trigonometry Practice Questions
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3D Trigonometry
Here we will learn about 3D trigonometry including how to combine your knowledge of Pythagoras’ Theorem, Trigonometric Ratios, The Sine Rule and The Cosine Rule and apply it to find missing angles and sides of triangles in 3-dimensional shapes.
There are also 3D trigonometry worksheets based on Edexcel, AQA and OCR exam questions, along with further guidance on where to go next if you’re still stuck.
What is 3D trigonometry?
3 D trigonometry is an application of the trigonometric skills developed for 2 dimensional triangles.
To find missing sides or angles in 3 dimensional shapes, we need to be very clear which rules and formulae we need to use in order to find different angles and side lengths.
The flowchart below can help determine which function you need to use:
You may need to carry out this process several times in a question to fully answer what is being asked. You must be able to justify which rule or formulae you need to use.
Top Tip: Look out for common angles or common sides.
How to use 3D trigonometry to find a missing angle or side length
In order to find a missing angle or side within a 3 -dimensional shape:
Calculate the necessary missing angle or side of a triangle.
- Sketch and label the second triangle using information from Step 1 .
- Calculate the missing angle or side of the final triangle.
Explain how to use 3D Trigonometry to find a missing angle or side length.
3D trigonometry worksheet
Get your free 3D trigonometry worksheet of 20+ questions and answers. Includes reasoning and applied questions.
3D trigonometry examples
Example 1: missing side using trigonometry and pythagoras’ theorem.
The diagram shows a cuboid.
Calculate the length of the line AH . Write your answer in the form a\sqrt{b}\mathrm{cm} where a and b are integers.
The line FH is shared between the two triangles EFH and AFH . We can find the length of FH by using simple trigonometric ratios.
Here we need to find the value of FH (the hypotenuse):
2 Sketch and label the second triangle using information from step 1.
3 Calculate the missing angle or side of the final triangle .
AFH is a right angle triangle, so we can use Pythagoras’ Theorem to find the value of x :
Example 2: finding length using trigonometric ratios
ABCDEF is an isosceles triangular prism. DF is 7cm , Angle DFE is 75 o and angle ECF is 40 o . Find the length of the line CE .
The triangle DEF is isosceles. We can split it in two and find the length of EF by using trigonometric ratios.
We need to find the value of x (the hypotenuse):
Sketch and label the second triangle using information from step 1.
You must remember not to round your solution too early. Here we will continue to use the full decimal given for x = 13.52296157 .
Calculate the missing angle or side of the final triangle .
Here we have a right angle triangle so we can use another trigonometric ratio to find the length CE :
Example 3: missing angle including midpoint
ABCDEFGH is a cuboid with the following information:
- The front face of the cuboid is a square.
- The midpoint M lies half-way between E and F .
- The line AC is at 30 o from the line AB .
- BCM is a triangle.
- CE=26\sqrt{3}
Using the diagram below, calculate the size of angle BMC , to 2 decimal places.
The line BC is shared between the two triangles ABC and BCM . We can find the length of BC by using trigonometric ratios.
Here we need to find the value of BC (the opposite side to the angle \theta ):
As M is a midpoint along EF , this gives us an isosceles triangle BCM . As we know CE=26\sqrt(3) this is the vertical height of the triangle.
As we can split an isosceles triangle into two right-angle triangles, and we can use trigonometric ratios to find the angle \frac{\theta}{2} then multiply by 2 to find \theta :
Example 4: missing angle using the cosine rule
ABCDEFGH is a cuboid. BH , FH and BF are straight lines that connect to make a triangle BFH . Using the information in the diagram, calculate the size of angle HFB .
Each side of the triangle BFH is the hypotenuse of one of the three faces of the cuboid. As we have all three dimensions of the cuboid, we can calculate each value ( x, y, z ) as follows:
Here we need to find the value of x (the hypotenuse):
Here we need to find the value of y (the hypotenuse):
Here we need to find the value of z (the hypotenuse):
Keeping BH=\sqrt{106} , we now have the triangle BFH:
As we know the three side lengths of the triangle, we can use the cosine rule to find the missing angle \theta.
Example 5: missing angle using the sine rule
The diagram shows a triangular prism.
- Angle DEC = 50º
- Angle EBC = 55º
The angle ϴ lies between the two lines CE and BE . Calculate the size of angle ϴ . Show all your working.
The line CE is shared between the two triangles CDE and BCE . We can find the length of CE by using trigonometric ratios.
Here we need to find the value of CE (the hypotenuse):
We know two sides and one of the two opposite angles so we need to use the sine rule to find the value for ϴ .
Example 6: missing side using the sine rule
The diagram shows a cylinder:
- A, B and D are points on the circumference of the circles.
- C is the centre of the circle.
- ABC is a triangle
- AD is the diameter of the cylinder.
By calculating the size of angle \theta , work out the height of the cylinder.
As we know two sides and one of the two opposite angles, we can use the sine rule to find the missing angle \theta .
Here we need to find the value of \theta :
\begin{aligned} \sin(\theta)&=\cfrac{\sin(15)}{7.8}\times{25.6} \\\\ \theta&=\sin^{-1}(0.8494573788) \\\\ \theta&=58.15269987… \\\\ \theta&=58.2^{\circ} \; (2dp) \end{aligned}
As AD is the diameter of the circle, we can label AD as 2 × BC = 15.6cm .
As the angle CBD is 90º , we can calculate the angle ABD to equal 90-58.1526…=31.8473…^{\circ}.
We now have enough information on the second triangle to calculate the height of the cylinder. Remember not to round too early.
Calculate the missing angle or side of the final triangle
To find the value of x , we use a simple trigonometric ratio.
Common misconceptions
- Using Pythagoras’ Theorem instead of trigonometry
Using two sides of a non right-angle triangle to find the third side instead of using the cosine rule.
- Incorrect trigonometric ratio used
Incorrect labelling of any triangle can lead to the wrong trig function being used.
- Confusing the Sine Rule with the Cosine Rule
Misunderstanding when to use the sine rule or cosine rule to find a missing side or angle.
- Using the inverse trig function instead and inducing a mathematical error
If the inverse trig function is used instead of the standard trig function, the calculator may return a maths error as the solution does not exist.
Related lessons
3D trigonometry is part of our series of lessons to support revision on trigonometry. You may find it helpful to start with the main trigonometry lesson for a summary of what to expect, or use the step by step guides below for further detail on individual topics. Other lessons in this series include:
- Trigonometry
- Area of a triangle trig
- Cosine rule
- Trigonometric functions
Practice 3D trigonometry questions
1. ABCDEFGH is a cuboid. Calculate the length of DF to 2 decimal places.
Let’s first look at triangle FGH:
We want to know the length of FH which is the opposite.
\begin{aligned} O&=A \tan(\theta)\\\\ O&=17 \tan(28)\\\\ O&=9.039060338 \mathrm{cm} \end{aligned}
Now that we know the length of FH , we can consider the triangle DFH:
Since we know two sides and we want to calculate the third side, we can use Pythagoras Theorem:
2. ABCDEF is a triangular prism. Calculate the angle DAE . Give your answer to 1 dp.
First we need to look at the triangle DEF:
We need to find the length of DE , which is the opposite.
Now that we know the length of DE, we can consider the triangle ADE :
We want to find the angle DAE. We know O and A .
3. ABCDE is a square based pyramid. By finding the value of x , calculate the perimeter of the base of the pyramid, correct to 2 decimal places.
First we need to work out the value of x:
Now we can look at the base:
The length of the sides can be found using Pythagoras Theorem:
Each side is 70.71m therefore the perimeter is:
4. Three satellites leave Earth on three different trajectories. 2 hours after launch, satellite A is 800km from Earth, satellite B is 500km from Earth and satellite C is 750km from Earth.
Use the cosine rule to calculate the size of angle CAB at this point in time.
AB, AC and BC can all be worked out using Pythagoras Theorem:
We can then apply the cosine rule:
5. Given that GH=10cm, work out the size of the angle GEH . Give your answer to 1 dp.
First we need to calculate the length of EH. We can do this using Pythagoras Theorem:
We can now look at the triangle EGH:
We can calculate angle GEH using the sine rule:
6. ABCDEF is a triangular prism. X, Y, and Z are midpoints on each edge of the prism and triangle XYZ is isosceles. Using this information and the diagram to help you, calculate the size of angle XYZ.
We need to calculate the length XZ using the triangle CXZ:
We can now look at triangle XYZ:
Using the cosine rule:
3D Trigonometry GCSE questions
1. ABCDEFGH is a cuboid.
Calculate the angle between the diagonal DF and the base AEHD .
Give your answer to 3 sf.
Triangle ADE:
Triangle DEF:
2. ABCDEF is a triangular prism.
The cross-section of the prism is an isosceles triangle.
M is the midpoint of AC .
Calculate the length of EM .
3. Find the size of the angle AFH .
Learning checklist
You have now learned how to:
- Apply Pythagoras’ Theorem and trigonometric ratios to find angles and lengths in right-angled triangles (and, where possible, general triangles) in 2 (and 3) dimensional figures
The next lessons are
- Pythagoras theorem
- Alternate angles
- Transformations
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The Corbettmaths Practice Questions on Trigonometry. Welcome; Videos and Worksheets; Primary; 5-a-day. 5-a-day GCSE 9-1; 5-a-day Primary; 5-a-day Further Maths; More. Further Maths; GCSE Revision; Revision Cards; Books; Trigonometry Practice Questions ... Previous: Standard Form Practice Questions. Next: Similar Shapes Area/Volume Practice ...
Example 1: find a side given the angle and the hypotenuse. ABC is a right angle triangle. The size of angle ACB = 60º and the length BC = 16cm. Calculate the value of x. Labelling the sides OAH in relation to the angle 60º, we can use the hypotenuse, and we need to find the adjacent side.
Trigonometry questions and Soh Cah Toa revision worksheets can be found on this MME Maths Trigonometry revision page. Revise. A Level. A Level Maths A Level Biology A Level Chemistry A Level Physics A Level ... Next GCSE Maths Topic Trigonometry Common Values. Contact Details. 020 3633 5145 / [email protected] Mon - Thurs: 09:00 - 19:00, Fri ...
Edexcel GCSE Mathematics (Linear) - 1MA0 TRIGONOMETRY Materials required for examination Items included with question papers Ruler graduated in centimetres and Nil millimetres, protractor, compasses, pen, HB pencil, eraser. Tracing paper may be used. Instructions Use black ink or ball-point pen.
Example 1: calculating with trigonometric functions. Work out the value of xx, given sin(72) = 25 xsin(72) = x25. Give your answer to 1dp. Set up an equation until involving Sin, Cos, or Tan. We already have an equation involving sin. 2 Rearrange the equation, making the value you are trying to find the subject.
Help your students prepare for their Maths GCSE with this free trigonometry worksheet of 44 questions and answers. Section 1 of the trigonometry worksheet contains 36 skills-based trigonometry questions, in 3 groups to support differentiation. Section 2 contains 4 applied trigonometry questions with a mix of worded problems and deeper problem ...
Step 1: Label the sides of the triangle according to the unknown angle. Step 2: Based on the sides we know, choose the correct trigonometric ratio, and substitute the known values in to form an equation. Step 3: Solve the equation using the inverse trigonometric function on the calculator. Round the final answer to 1 decimal place.
The trigonometry GCSE maths revision section of Revision Maths covering: Sin, Cos, Tan, Pythagoras, Sine and Cosine Rule, Similar Triangles and Congruency. Sin, Cos, Tan. Pythagoras Theorem. Sine and Cosine Rule. Similar Triangles.
Sin, Cos and Tan Graphs Example Questions. Question 1: On the same axes, plot the functions y=\sin (x) and y=\cos (x) between -180\degree and 180\degree. [4 marks] Level 6-7 GCSE AQA Edexcel OCR WJEC Cambridge iGCSE Edexcel iGCSE. Question 2: Plot the function y=\tan (x) from -360\degree to 360\degree. [2 marks]
Some candidates worked out the correct answer by finding the length of LM using Pythagoras and then using either the sine rule or cosine rule to find the angle marked x, but many who started this method were unsuccessful. A small number used sine instead of cosine to obtain an incorrect answer of 22.9°. Most candidates scored either 1 mark ...
ppsx, 1.52 MB. Ideal for GCSE revision, this worksheet contains exam-type questions that gradually increase in difficulty. This sheet covers Trigonometry in Right-angled Triangles (aka ' soh cah toa '). These review sheets are great to use in class or as a homework. They are also excellent for one-to-one tuition and for interventions.
Corbett Maths 3D Trigonometry. Note: The answers to these questions can be found by clicking on the green tick at the bottom of each of these worksheets. MathsGenie Sine Rule - Markscheme. MathsGenie Cosine Rule - Markscheme. MathsGenie Area of Triangle with Sine - Markscheme. MathsGenie 3D Trig - Markscheme. Self Marking Online Activities:
It does encourage me to upload more. This resource contains all of the Exact Trigonometric Value questions that have come up in the released Edexcel GCSE maths papers to date (Autumn 2021), arranged as a printable worksheet. There is also reference to which paper each question came up on. The full solutions are also included (please let me know ...
Trigonometry table GCSE questions. 1. Complete the table of exact trigonometric values for the angles of 30^ {\circ} 30∘ and 60^ {\circ}. 60∘. (4 marks) Show answer. 2. James sketches the right-angled triangle used to generate the exact trig values for the sine, cosine and tangent of 45^ {\circ}. 45∘.
The diagram shows a sketch of the graph y = —900 sm x. 1800 —1800 x 1800 which satisfy the Using your calculator, find the values of x in the range equation sin x 0-2. (a) Using the axes sketch the graph of y = cos x for values of x from —1800 to 1800. (b) Find all solutions of the following equation in the range —1800 to 1800. cosx ...
A worksheet focusing on solving simple trigonometry. ... Level: GCSE. Language: English (en) ID: 1358504. 06/09/2021. Country code: GB. Country: United Kingdom. School subject: Math (1061955) Main content: Trigonometry (2011238) A worksheet focusing on solving simple trigonometry ...
Math Worksheets. Examples, solutions, videos, games, activities and worksheets that are suitable for GCSE Maths. Trigonometry SOHCAHTOA GCSE Higher Maths Trigonometry 2 (GCSE Higher Maths)- Exam Qs 16. Show Step-by-step Solutions. Trigonometry : problems involving Pythagoras and SOHCAHTOA.
Trig Graphs. Here we will learn about trig graphs, including what each type of trigonometric graph looks like for a range of angles, labelling key features on each graph, and interpreting the graphs of the trig functions y=\sin{x}, \; y=\cos{x} and y=\tan{x}.. There are also trig graphs worksheets based on Edexcel, AQA and OCR exam questions, along with further guidance on where to go next if ...
There are also trigonometry formulas worksheets based on Edexcel, AQA and OCR exam questions, ... Trigonometry is a large branch of mathematics. At GCSE, you barely scratch the surface of how widely trigonometry is used within mathematics and so this is developed further at A level. Other trigonometric functions you will look at at A level include
The Corbettmaths Practice Questions on 3D Trigonometry. Welcome; Videos and Worksheets; Primary; 5-a-day. 5-a-day GCSE 9-1; 5-a-day Primary; 5-a-day Further Maths; More. Further Maths; GCSE Revision; Revision Cards; Books; 3D Trigonometry Practice Questions ... Types of Triangles Practice Questions. Next: Sine Rule and Cosine Rule Practice ...
Example 1: missing side using trigonometry and Pythagoras' theorem. The diagram shows a cuboid. Calculate the length of the line AHAH. Write your answer in the form a√bcm a bcm where aa and bb are integers. Calculate the necessary missing angle or side of a triangle.