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OpenStudy (anonymous):
Find the exact circular function value tan-5pi/6 I need help
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OpenStudy (anonymous):
So since its -5pi/6, you know that it is a function of pi/6, and tan pi/6 is √3/3, so when you look where 5pi/6 is, tangent is negative in quadrant two, so you know 5pi/6 is -√3/3, but since its -5pi/6, its just √3/3
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