# How do you find the angles of a triangle given sides 9, 6, and 14?

##### 1 Answer

Jul 8, 2017

The angles are

#### Explanation:

Firstly, Is it a right-angled triangle?

Check using Pythagoras's Theorem.

No

Use the Cosine rule to find the biggest angle first - that will tell you whether the angle is acute or obtuse.

Now use the Sine rule:

Use the sum of the angles to find the third angle: