# The sides of a triangle form three consecutive terms in an arithmetic sequence, with sides of length #2x + 5#, #8x#, #11x + 1#. Determine the measure of the smallest angle within the triangle?

##### 1 Answer

Nov 17, 2016

The largest angle is

#### Explanation:

Set up a systems of equations.

We can now find the sides of the triangle.

The largest angle will be opposite the largest side.

Let's call the side that measures

Hence, the largest angle is

Hopefully this helps!