SOLUTION: sin theta + cos theta = cos 2 theta

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Question 1034055: sin theta + cos theta = cos 2 theta
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
If you are asking to solve this...
sin%28theta%29+%2B+cos%28theta%29+=+cos+2%28theta%29
sin%28theta%29+%2B+cos%28theta%29+=+%28cos%28theta%29%29%5E2+-+%28sin%28theta%29%29%5E2

1+=+cos%28theta%29-sin%28theta%29
theta+=+0 or theta+=+270
Two more solutions exist...
theta+=+135 or theta+=+315