Evaluate the following definite Integrals:

To solve these kinds of equations we generally take x=

So now here let

So now

Now change the limits

X=0 then =0

X=1 then =

So it is equal to

now use formula sin2x=2sinxcosx

Now use formula that

)

Now let us recall other formula :

and

Now recall that sin0=0, cos0=1