Question

The lengths of the three sides of a triangle are 3, 15, and 16. Classify it as acute, obtuse, or right.

Answer 1

An Obtuse triangle
The three angles are 104.149, 65.376, 10.475. And since one of these angles is greater than 90 it is classified an obtuse triangle

Answer 2

Obtuse Scalene Triangle

Explanation:

Sum of the squares of the smaller 2 sides < longest side squared = Obtuse Scalene Triangle