Trigonometry — Sin, Cos, Tan (Edexcel GCSE Maths): Flashcards

Relationships between angles & sides of triangles

Opposite and hypotenuse

Adjacent and hypotenuse

Opposite and adjacent

$\frac{\text{Opposite}}{\text{Hypotenuse}}$

$\frac{\text{Adjacent}}{\text{Hypotenuse}}$

$\frac{\text{Opposite}}{\text{Adjacent}}$

Longest side, opposite the right angle

Side directly across from the angle

Side next to the angle (not hypotenuse)

Sine = Opposite ÷ Hypotenuse

Cosine = Adjacent ÷ Hypotenuse

Tangent = Opposite ÷ Adjacent

DEG mode

Depression