SOLUTION: prove identity of cos(3pi/2+x)=sinx

SOLUTION: prove identity of cos(3pi/2+x)=sinx

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Question 821608: prove identity of cos(3pi/2+x)=sinx
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
prove identity of
cos(3pi/2+x)=sinx
start with left side:
using cos addition formula:

verified: left side=right side
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