Exercises 7174 refer to the unit circle in this figure.
Chapter 4, Problem 4.1.1.253(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 Drop perpendiculars from points P and Q to the x-axis to form two right triangles. Explain how the right triangles are related.
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