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If cot A = k, then sin A is equal to : (...

If cot A = k, then sin A is equal to : (presume that A is an acute angle)

A

`(k ^(2))/( sqrt (1 + k ^(2)))`

B

`(1)/(k)`

C

`- (1)/(k)`

D

`(1)/(sqrt ( 1 + k ^(2)))`

Text Solution

Verified by Experts

The correct Answer is:
D
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