## Trigonometry (10th Edition)

$\sin$A = $\frac{k}{z}$ $\cos$A = $\frac{y}{z}$ $\tan$A = $\frac{k}{y}$
$\sin$A = $\frac{perpendicular}{hypotenuse}$ $\cos$A = $\frac{base}{hypotenuse}$ $\tan$A = $\frac{perpendicular}{base}$