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"cot" theta = "sin" 2 theta, theta ne n ...

`"cot" theta = "sin" 2 theta, theta ne n pi, n in Z, "if" theta` equals

A

`45^(@)and60^(@)`

B

`45^(@)and90^(@)`

C

`45^(@)` only

D

`90^(@)` only

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The correct Answer is:
B
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