Question 933005
correct form is found by adding multiples of 2pi
{{{4pi = (12/3)pi}}}
tan(-10pi/3) = tan(-10pi/3 + 12pi/3) = tan (2pi/3) = {{{(sqrt(3)/2)/(-1/2) = -sqrt(3)}}}
..........
(cosx, sinx) Summary Unit Circle
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