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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^(@) "or" 90^(@)`

B

`45^(@) "or" 60^(@)`

C

`90^(@) "only"`

D

`45^(@) "only"`

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The correct Answer is:
A
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OBJECTIVE RD SHARMA-TRIGONOMETRIC EQUATIONS AND INEQUATIONS-Exercise
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