Q. 23.6( 15 Votes )

If sin A=, then the value of cot A is
A.

B.

C.

D. 1

Answer :

Given: … eq. 1

And we know that, …eq. 2


We need to find the value of cos A.


…eq. 3


(, sin2 θ +cos2 θ =1


cos2 A = 1-sin2 A


cos A = √ (1-sin2 A)


Substituting eq. 1 in eq. 3, we get


cos A = √(1-1/4)


=


Substituting values of sin A and cos A in eq. 2, we get


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