Question
Sat March 02, 2013 By:

Prove that: sin2x+sin2(x+π/3)+sin2(x-π/3)=3/2

Expert Reply
Sun March 03, 2013
Please note that there is a mistake in the question. It should be sin2x+sin2(x+π/3)+sin2(x-π/3)=0
 
and here is now, you can prove that 

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