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If sinx + sin^(2)x =1 then cos^(12)2x + ...

 If `sinx + sin^(2)x =1` then `cos^(12)2x + 3cos^(10)x+3cos^(8)x + cos^(6)x` =

A

`sin^(2)x`

B

2

C

1

D

0

Text Solution

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The correct Answer is:
A
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MODERN PUBLICATION-TRIGONOMETRIC RATIOS, IDENTITIES AND EQUATIONS-MULTIPLE CHOICE QUESTION(LEVEL-II)
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