SOLUTION: Express sin(x/2) in terms of cos(x).

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Question 544718: Express sin(x/2) in terms of cos(x).
Answer by lwsshak3(11628) About Me  (Show Source):
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Express sin(x/2) in terms of cos(x)
Use the half-angle formula for sin:
sin(x/2)=±√[(1-cosx)/2]