itomath.com

(29A) The Unit Circle

Find the exact value of:

$\cos 210°$

$\cos 0°$

$\cos 120°$

$\cos 225°$

$\cos 135°$

$\cos 60°$

$\sin 225°$

$\sin 120°$

$\cos 330°$

$\cos 180°$

$\sin 270°$

$\sin 60°$

$\sin 135°$

$\sin 315°$

$\sin 90°$

$\cos 315°$

$\cos 150°$

$\sin 180°$

$\cos 45°$

$\sin 45°$