itomath.com
(29A) The Unit Circle
Find the exact value of:
$\sin 90°$
$\cos 240°$
$\sin 315°$
$\cos 225°$
$\cos 45°$
$\cos 120°$
$\tan 45°$
$\cos 315°$
$\sin 240°$
$\sin 210°$
$\cos 330°$
$\sin 330°$
$\sin 270°$
$\sin 30°$
$\sin 135°$
$\cos 210°$
$\cos 30°$
$\cos 300°$
$\sin 300°$
$\tan 30°$