Trigonometry 1 (AQA GCSE Maths): Quizzes

Missing angles when we know two sides

Right-angled triangle

$\sin x° = \frac{\text{opposite}}{\text{hypotenuse}}$

$\cos x° = \frac{\text{adjacent}}{\text{hypotenuse}}$

$\tan x° = \frac{\text{opposite}}{\text{adjacent}}$

Longest side, opposite the right angle

Cosine = Adjacent ÷ Hypotenuse

Find an angle from a ratio

Degree mode (look for 'D' symbol)

The $\tan^{-1}$ function