SOLUTION: verify that (cos x + sin x) = (sin 2x)/2

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Question 515469: verify that (cos x + sin x) = (sin 2x)/2
Answer by Edwin McCravy(20060) About Me  (Show Source):
You can put this solution on YOUR website!


cos(x) + sin(x) = sin%282x%29%2F2



Sorry, but this isn't true!  Did you copy it wrong?



To disprove it simply use x=0



cos(0) + sin(0) = sin%282%2A0%29%2F2



          1 + 0 = sin%280%29%2F2



              1 = 0%2F2



              1 = 0



False!



Edwin