Finding an Unknown Side or Angle (HSC SSCE Mathematics Standard): Flashcards

Sin=Opp/Hyp, Cos=Adj/Hyp, Tan=Opp/Adj

One angle (besides right angle) and one side

Two sides

$\frac{o}{h}$ (opposite/hypotenuse)

$\frac{a}{h}$ (adjacent/hypotenuse)

$\frac{o}{a}$ (opposite/adjacent)

Degree mode

Multiply both sides by $x$, then divide by trig expression

Inverse trig: $\sin^{-1}$, $\cos^{-1}$, $\tan^{-1}$

60 minutes