Finding an Angle in a Right-Angled Triangle (VCE SSCE General Mathematics): Flashcards

Find angles from trigonometric ratio values

$\sin^{-1}$, $\cos^{-1}$, $\tan^{-1}$

Inverse function, NOT a power or exponent

The angle whose sine is 0.8480 equals 58°

Opposite and hypotenuse sides

Adjacent and hypotenuse sides

Opposite and adjacent sides

$90°$

Degree mode, not radian mode

Use brackets: $\sin^{-1}(19/42)$ not $\sin^{-1}(19)/42$