Question

prove sec2-1- tan2 =0​

Answer 1

Answer:

We know that 1+tan^2=sec^2

1= sec^2-tan^2(equation 1)

L.H.S. sec^2-1-tan^2

Putting value of one from equation 1

= sec^2-(sec^2-tan^2)-tan^2

=sec^2-sec^2+tan^2-tan^2

=0 = R.H.S

Hence, it is proved.