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If cosθ+cos2θ=1,prove that sin^12θ+3sin^10θ+3sin^8θ+sin^6θ+2sin^4θ+2sin^2θ-2=1

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asked Feb 15, 2018 in Mathematics by Kundan kumar (49,132 points) ● 34 ● 382 ● 1019

If cosθ+cos2θ=1,prove that sin12θ+3sin10θ+3sin8θ+sin6θ+2sin4θ+2sin2θ-2=1

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answered Feb 15, 2018 by Vikash Kumar (144,729 points) ● 8 ● 11 ● 21
 
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   Hence proved.

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