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If sin^(3) x sin 3x = sum(m = 0)^(6) c(m...

If `sin^(3) x sin 3x = sum_(m = 0)^(6) c_(m) cos (m) x,"where" c_(0), c_(1),….,c_(6)` are constants, then

A

`c_(0) + c_(2) + c_(4) + c_(6) = 0`

B

`c_(1) + c_(3) + c_(5) = 6`

C

`2 c_(2) + 3 c_(6) = 0`

D

`c_(4) + 2 c_(6) = 0`

Text Solution

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The correct Answer is:
A
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