Inverse trigonometric functions undo the effects of trigonometric functions by finding angles based on given ratios or values.
Equations involving trigonometric functions that are true for all possible input values.
Unit Circle: A circle with radius 1 centered at the origin of a coordinate plane, used to understand trigonometric functions.
Trigonometric Ratios: The ratios of the sides of a right triangle in relation to its angles, including sine, cosine, and tangent.