To solve an unknown angle problem, identify the angle relationship(s) first to set up an equation that will yield the unknown value. Angles on a line and supplementary angles are not the same relationship.
Apr 19, 2016 · Like the sine equation, an equation of the form ⁡ = only has solutions when n is in the interval [−,]. To solve such an equation we first find one angle such that: = ⁡ Then the solutions for are: