SOLUTION: sqrt(2+sqrt(2cos4A))=2cosA

Question 1040275: sqrt(2+sqrt(2cos4A))=2cosA
Answer by ikleyn(52847) (Show Source): You can put this solution on YOUR website!
.
Unclear.

1. There is no question. It is enough to ignore/disregard your post.

2. Is it an identity to prove? Or is it an equation?

3. If it is this identity = ,

then it is simply incorrect.

Check it at A = .

4. Why I should decipher your writing?
It is your responsibility to provide correct input.
If you are not able to do it, do not post.

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