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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

Put these terms in above equation,we get

Let us now again apply the substitution method in above equation

Let t^-2 = k

-2.t^-3dt = dk

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