Find all the solutions to a trig equation with two different functions

What are the angles at which tangent of X equals zero?

Explain how to simplify the expression for X when tangent of X equals zero.

What is the significance of including or excluding zero in the solution set between 0 and 2π?

How does the identity sine squared minus one relate to cosine?

Identify the values of X for which cosine of X equals zero.