I don't have an issue solving this problem but it says DO NOT solve it. Instead I am to explain my answer which I have a hard time with. Any help would be appreciated :)

The number of solutions of an unrestricted trigonometric equation is infinite, but even when the domain is restricted to the number of solutions can vary depending on the equation. Given the equation: . How many solutions do you think this equation will have on an interval of ? . Justify your hypothesis with any relevant information you used to determine your response. This may include information about: o Linear trigonometric equations. o Quadratic trigonometric equations. . Trigonometric functions. o Trigonometric identities. o The exact values of trigonometric ratios. Note: Do not determine a solution to this equation. An actual solution is not necessary to complete this discussion