# How do you solve the right triangle given a=15,b=11, c=20?

##### 1 Answer

The angles of this triangle are:

#### Explanation:

This triangle is not right angled one, because it does not satisfy conditions given in Pytagorean Theorem:

However you can stil solve this triangle using the Cosine Theorem.

This theorem says that in **any** triangle following equalities are true:

where

Using this theorem we can calculate:

Using similar calculations you can find, that:

To calculate