Handwritten solutions to trigonometric equations using factoring, with variable substitutions and interval-specific answers.
A close-up of a math homework sheet titled "2.5 Solving Trig Equations by Factoring Homework," showing handwritten solutions to trigonometric equations using substitution and factoring methods. The paper is filled with algebraic steps, variable substitutions (u = sin x, u = cos x, etc.), and solutions for x within specified intervals, including some corrections and notes like "Skip!" and "Does Not Exist."