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If sinx+sin^2x=1n then the value of cos^...

If `sinx+sin^2x=1`n then the value of `cos^12x+3cos^10x+3cos^8x+cos^6x-1` is equal to

A

0

B

1

C

2

D

`sin^2x`

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • If sin x + sin ^(2)x =1, then the value of (cos ^(12) x+ 3 cos ^(10) x +3 cos ^(8) x+ cos ^(6)x) is-

    A
    1
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    B
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  • If sin x+ sin y+ sin z=3, then the value of (cos x+ cos y+ cos z) is-

    A
    1
    B
    `-3`
    C
    `0`
    D
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