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Trigonometry (SOH CAH TOA)

Revise Trigonometry (SOH CAH TOA) in Geometry & Measures for GCSE Mathematics with 19 exam-style questions and 7 flashcards. This is a high-frequency exam topic, so students should expect to explain it clearly under timed conditions.

Study this topic

1

Beyond Pythagoras

Introduction2

The Labels (CRUCIAL!)

Key Facts3

SOH CAH TOA

Key Facts4

Worked Example 1: Finding a Side

Notes5

Worked Example 2: Finding an Angle

Notes6

Calculator Check!

Notes

Sample Flashcards

SOH CAH TOA
Sin = O/H, Cos = A/H, Tan = O/A. Pick based on which two sides you have or need.
SOH CAH TOA
sin = Opp/Hyp, cos = Adj/Hyp, tan = Opp/Adj

Sample Questions

Which trigonometric ratio connects the opposite side and the hypotenuse in a right-angled triangle?

  • A. tan θ = opposite / adjacent
  • B. cos θ = opposite / hypotenuse
  • C. sin θ = opposite / hypotenuse
  • D. sin θ = adjacent / hypotenuse
1 markfoundation

For the triangle shown, a student chooses to use sin to find the missing side. Explain why they chose sin rather than one of the other trigonometric ratios.

2 marksstandard

19

exam-style questions

7

revision flashcards

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