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Geometry & MeasuresVery High Exam FrequencyAQAEdexcelOCRWJEC

Exact Trig Values

Revise Exact Trig Values in Geometry & Measures for GCSE Mathematics with 14 exam-style questions and 4 flashcards. This is a very high-frequency exam topic, so it is worth revising until the core ideas feel automatic.

Study this topic

1

The Special Triangles

Introduction2

The Values You MUST Know

Key Facts3

Memory Tricks

Deep Dive4

Worked Example 1

Notes5

Worked Example 2

Notes6

Worked Example 3

Notes

Sample Flashcards

Sin Pattern
sin 0°=0, sin 30°=1/2, sin 45°=√2/2, sin 60°=√3/2, sin 90°=1. Pattern: √n/2 for n=0,1,2,3,4
Cos Pattern
Cos is sin BACKWARDS. cos θ = sin(90°-θ). So cos 30° = sin 60°, etc.

Sample Questions

What is the exact value of sin 30°?

  • A. √3/2
  • B. 1/2
  • C. √2/2
  • D. 1
1 markfoundation

James says that sin 30° and cos 60° are equal. Is James correct? Explain your answer using exact values.

2 marksstandard

14

exam-style questions

4

revision flashcards

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