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f(alpha.beta) = cos^2+ beta cos^2(alpha+...

`f(alpha.beta) = cos^2+ beta cos^2(alpha+beta)- 2 cosalpha cosbeta cos(alpha+beta)` is

A

Is independent of `beta`

B

Is independent of `alpha`

C

Is independent of both `alpha` and `beta`

D

Is dependent of `beta`

Text Solution

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The correct Answer is:
B, D
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