Quick Review
There are six possible ratios of two sides of a triangle. The ratios are functions of and are trigonometric functions. The six trigonometric functions are defined as: The values of x and y may be positive, negative, or zero, but r is always positive. Example 1
Given the point (-8,15) on the terminal side of an angle , find the six trigonometric functions of . Example 2
Given the point (3,-5) on the terminal side of an angle , find the six trigonometric functions of . (csc should be negative) |