SOLUTION: I need help using the unit circle. The question is find the exact value of tan(-10pi/3).

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Question 933005: I need help using the unit circle. The question is find the exact value of tan(-10pi/3).
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
correct form is found by adding multiples of 2pi
4pi+=+%2812%2F3%29pi
tan(-10pi/3) = tan(-10pi/3 + 12pi/3) = tan (2pi/3) = %28sqrt%283%29%2F2%29%2F%28-1%2F2%29+=+-sqrt%283%29
..........
(cosx, sinx) Summary Unit Circle
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