Mathematics - Lecture 25 "Trigonometric equations", this sections illustrates the process of solving trigonometric equations of various forms. It also shows you how to check your answer three different ways: algebraically, graphically, and using the concept of equivalence. | Trigonometric Equations Institute of Mathematics, University of the Philippines Lecture 25 (IMath, UP) Trigonometric Equations Lec. 25 1 / 10 Conditional Trigonometric Equations Solve for x: 2 sin x + (IMath, UP) √ 3=0 Trigonometric Equations Lec. 25 2 / 10 Conditional Trigonometric Equations √ 3=0 √ 3 sin x = − 2 Solve for x: 2 sin x + (IMath, UP) Trigonometric Equations Lec. 25 2 / 10 Conditional Trigonometric Equations √ 3=0 √ 3 sin x = − 2 4π x= 3 Solve for x: 2 sin x + (IMath, UP) Trigonometric Equations Lec. 25 2 / 10 Conditional Trigonometric Equations √ 3=0 √ 3 sin x = − 2 4π 5π x= , 3 3 Solve for x: 2 sin x + (IMath, UP) Trigonometric Equations Lec. 25 2 / .