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(29A) The Unit Circle

Find the exact value of:

$\cos 180°$

$\sin 150°$

$\cos 240°$

$\tan 30°$

$\sin 270°$

$\cos 270°$

$\cos 120°$

$\sin 30°$

$\cos 225°$

$\tan 45°$

$\cos 210°$

$\cos 90°$

$\cos 30°$

$\sin 240°$

$\cos 60°$

$\cos 135°$

$\cos 330°$

$\sin 225°$

$\sin 45°$

$\sin 180°$