Q. 73.6( 8 Votes )

Prove that :

Answer :

To prove:

Formula used:

Take L.H.S.:

= R.H.S.

Hence Proved


Given: 2 tan-1 (cos x) = tan-1 (2 cosec x)

To find: value of x

Formula used:


2 tan-1 (cos x) = tan-1 (2 cosec x)

{ sin2 x + cos2 x = 1}

Hence, the value of x is

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