Question: Evaluate each expression using the unit circle. No decimal answers. Show all work. a. sin 150 cos(-300)-sin 810 cos 240 b. cos 210 cot

Evaluate each expression using the unit circle. No decimal answers. Show all

Evaluate each expression using the unit circle. No decimal answers. Show all work. a. sin 150 cos(-300)-sin 810 cos 240 b. cos 210 cot 120 + 3 sin 135 c. cos 150-cos 180 + tan2(-240) d. tan () cos+2 csc

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