Problem

To work Exercises 57–77, begin by reproducing the graph in Figure 29. Keep in mind that...

To work Exercises 57–77, begin by reproducing the graph in Figure 29. Keep in mind that for each of the four points labeled in the figure, r = 1. For each quadrantal angle, identify the appropriate values of x, y, and r to find the indicated function value. If it is undefined, say so. See Example 4.

tan 450°

(Reference Example 4)

Find the values of the six trigonometric functions for each angle.

(a) an angle of 90°

(b) an angle in standard position with terminal side through (-3, 0)

(Reference Figure 29)

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