Question

Tan^2/(sec-1) ^2=1+cos÷1-cos

Answer 1

Answer:

to prove the given equation

Step-by-step explanation:

L.H.S:

tan^2 x/sec x -1

=sec^2 x -1/(sec x -1)^2

=(sec x +1)(sec x -1)/(sec x -1)(sec x -1)

=sec x + 1/sec x -1

=(1/cosx +1 )/( 1/cos x - 1)

=1 + cos x / 1 - cos x

=R.H.S

hence proved