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1-8 cos ^(2) theta + 8 cos ^(4) theta=...

`1-8 cos ^(2) theta + 8 cos ^(4) theta=`

A

`sin 4 theta`

B

`cos 4 theta`

C

`sin ^(4) theta + cos ^(4) theta`

D

`sin ^(4) theta - cos ^(4) theta`

Text Solution

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The correct Answer is:
B
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