SOLUTION: (sinx+cosx)^2+(sinx-cosx)^2=2

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Question 1200472: (sinx+cosx)^2+(sinx-cosx)^2=2
Answer by Alan3354(69443) About Me  (Show Source):
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(sinx+cosx)^2+(sinx-cosx)^2=2
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sin^2 + 2sin*cos + cos^2 + sin^2 - 2sin*cos + cos^2 = 2
2sin^2 + 2cos^2 = 2
sin^2 + cos^2 = 1 --- An identity