To solve trigonometric inequalities, use the properties of the trigonometric functions and algebraic manipulations to isolate the variable on one side of the inequality. Then, apply appropriate trigonometric function inverses to find the interval.
What are trigonometric inequalities?
Trigonometric inequalities are inequalities that involve one or more trigonometric functions.
How do you know if a trigonometric equation has no solution?
If a trigonometric equation involves a function that has a limited range and the equation is not satisfied for any value in the range, then it has no solution.