Find exact values of the six trigonometric functions for each angle. Rationalize denominators when applicable. See Examples 2, 3, and 5.
-510°
(Reference Example 2)
Find the values of the six trigonometric functions for 210°.
(Reference Example 3)
Find the exact value of each expression.
(a) cos(-240°)
(b) tan 675°
(Reference Example 5)
Evaluate each function by first expressing in terms of a function of an angle between 0° and 360°.
(a) cos 780°
(b) cot(-405°)
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