Evaluate

first divide nominator by denominator –

: To solve this type of solution ,we are going to substitute the value of sinx and cosx in terms of tan(x/2)

In this type of equations we apply substitution method so that equation may be solve in simple way

Let tan(x/2)=t

1/2.sec²(x/2)dx=dt

Put these terms in above equation,we get

Substitute these terms in above equation gives-

Now put the value of t, t=tan(x/2) in above equation gives us the finally solution