Trigonometry 1 (Edexcel GCSE Maths): Quizzes

The size of an angle

A right-angled triangle

Longest side opposite the right angle

Side touching the angle (not hypotenuse)

The hypotenuse

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

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

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

Sine

Tangent

Degree mode (D symbol)

Finding angles (reverse operations)