Solving Trigonometric Equations (Grade 10 NSC Matric Mathematics): Flashcards

$\sin \theta = \frac{\text{opposite}}{\text{hypotenuse}}$

$\cos \theta = \frac{\text{adjacent}}{\text{hypotenuse}}$

$\tan \theta = \frac{\text{opposite}}{\text{adjacent}}$

SOH CAH TOA

When finding angles from known side ratios

SHIFT key (or 2nd)

1

When sin or cos value > 1 or < -1

Longest side opposite the right angle

Angles: 1 d.p., Lengths: 2 d.p.