dividing by cos6x yields-I=∫tan2x.sec4x dxLet us consider tanx=tThen sec2xdx=dt,put in above equation-Now reput the value of t,which is t=tanx

Q79 of 865 Page 19

Evaluate

dividing by cos⁶x yields-

I=∫tan²x.sec⁴x dx

Let us consider tanx=t

Then sec²xdx=dt,put in above equation-

Now reput the value of t,which is t=tanx

Evaluate