Choose u in these order LIATE(L-LOGS,I-INVERSE,A-ALGEBRAIC,T-TRIG,E-EXPONENTIAL)

u=sin^-1 v=1

Put

dx=2tdt

Now put t=sinu;

dt=cos u du;

=cos u

…(Here we can substitute sin²x=(1-cos2u)/2)

Put

I=