Integration of hyperbolic cosine function is an important integral formula in integral calculus; this integral belongs to hyperbolic formulae.

The integration of hyperbolic cosine function is of the form

To prove this formula, consider

Using the derivative formula , we have

Integrating both sides of equation (i) with respect to , we have

As we know that by definition integration is the inverse process of derivative, so the integral sign and on the right side will cancel each other, i.e.

__Other Integral Formulas of Hyperbolic Cosine Function__**:**

The other formulas of hyperbolic cosine integral with angle of hyperbolic cosine is in the form of function are given as

**1. **

**2.**