SOLUTION: (1+sinx)[1+sin(-x)]=cos^2x

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Question 590189: (1+sinx)[1+sin(-x)]=cos^2x
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
(1+sinx)[1+sin(-x)]=cos^2x
Starting with left side:
(1+sinx)[1+sin(-x)]
sin(-x)=-sin(x)
(1+sinx)[1-sin(x)]
difference of squares
1-sin^2x=cos^2x
verified:
left side = right side