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If : cos 2 theta = sin alpha, then :thet...

If `: cos 2 theta = sin alpha`, then :`theta` is given by

A

`2 theta = (pi//2) - alpha`

B

`theta = 2npi +- ((pi)/2 - alpha)`

C

`theta = 1/2[n pi + (-1)^(n) cdot alpha]`

D

`theta = n pi +- ((pi)/4 - alpha/2)`

Text Solution

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The correct Answer is:
D
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