Evaluate of each of the following integral:

.

Let us assume .......equation 1

By property, we know that

Thus

.....equation 2

Adding the equations 1 and 2, we get,

We know

Trigonometric formula

We know

Thus

We know

Thus

we know b and a being the upper and lower limit

Since sinπ = 0 and sin (– ɵ) = – sinɵ

Thus