Defining the Trigonometric Ratios (Grade 10 NSC Matric Mathematics): Flashcards

Longest side, opposite the right angle

Side directly across from the angle

Side next to the angle, not hypotenuse

$\frac{\text{opposite}}{\text{hypotenuse}}$

$\frac{\text{adjacent}}{\text{hypotenuse}}$

$\frac{\text{opposite}}{\text{adjacent}}$

Sine = Opposite/Hypotenuse

Cosine = Adjacent/Hypotenuse

Tangent = Opposite/Adjacent

Sine and cosine