Suppose that α2 is an angle in quadrant 3 and that cos α=−725. Compute the exact...

Question

Question

Suppose that α2 is an angle in quadrant 3 and that cos α=−725. Compute the exact value of cos(α2).

cos(α2)=

math trigonometry

Answer 1

Answer #1

Given, Соях 25 a in quadrant 3 Solution : the identity using 9205 It coga 2009?) 25-7 17 -3 25 25 23 cost/21 - 189 2842 9 28

Answer 2

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