Exercises 7174 refer to the unit circle in this figure.
Chapter 4, Problem 4.1.1.254(choose chapter or problem)
Exercises 71–74 refer to the unit circle in this figure. Point P is on the terminal side of an angle t and point Q is on the terminal side of an angle \(t+\pi / 2\).
Using Geometry in Trigonometry If the coordinates of point P are (a, b), explain why the coordinates of point Q are (-b, a).
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