Evaluate the following integrals:
Here first of all convert secx in terms of cosx
∴ We get
⇒
∴ We get
⇒
=
∴ The equation now becomes
⇒
We know
Cos 2x = 2 cos2x - 1
∴ We can write the above equation as
⇒
⇒
⇒ 2 sin x –
(
⇒ 2 sin x – ln|sec x + tan x| + c