Q. 725.0( 1 Vote )

Evaluate <span la

Answer :

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



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