Getting to the Roots of a Problem

Image by Gerd Altmann from Pixabay

Recently I came across a vexing trigonometry problem that uses a number of different concepts, such as unit circles and factoring. I thought it would be helpful to share what I found while it’s fresh in my mind.

This one is Problem #4 from AnalyzeMath, a terrific site with free math tutorials. The problem is below.

Solve the trigonometric equation given by