What is integral of

Question

csc^3 (2x)

Answer 1

.

Pythagorean identities: 1 + cot² (x ) = csc²(x )

Apply formula : .

Now, find .

By substitution method:

Apply derivative on each side with respect of u .

Now the above integral is

Apply formula : .

Put, .

Suubstitute the integral value in equation (1).

Therefore, .