# Deriving angles

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Given the degrees to two angles of a triangle. A =65Âº, b = 40Âº

Derive the degrees in the angle c.

https://brainmass.com/math/triangles/deriving-angle-functions-13875

#### Solution Preview

Okay...the sum of the angles of a triangle equal 180.

That means ...

#### Solution Summary

This shows how to find the third angle in a triangle if two are given.

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