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If theta=pi/8, then what is value of (2c...

If `theta=pi/8,` then what is value of `(2costheta+1)^(10)(2cos2theta-1)^(10)(2costheta-1)^(10)(2cos4theta-1)^10 ?` (i)`0` (ii)`1` (iii)`2` (iv) `4`

A

0

B

1

C

2

D

4

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The correct Answer is:
B
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