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Chapter 4. Trigonometry. Section 4.1: Figure 4.1, Terminal and Initial Side of an Angle. Section 4.1: Figure 4.2, Angle in Standard Position. Section 4.1: Figure 4.3, Positive and Negative Angles. Section 4.1: Figure 4.4, Coterminal Angles.
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Chapter 4 Trigonometry
Section 4.1: Figure 4.1, Terminal and Initial Side of an Angle
Section 4.1: Figure 4.13, Common Degree Measures on the Unit Circle
Section 4.3: Right Triangle Definitions of Trigonometric Functions
Section 4.4: Figure 4.37, Signs of the Trigonometric Functions
Section 4.5: Figure 4.49, Key Points in the Sine and Cosine Curves
Section 4.6: Figure 4.64, Graphs of Cosecant and Secant Functions
Section 4.6: Figure 4.70, Graphs of Basic Trigonometric Functions
Section 4.7: Figure 4.74, Graphs of Inverse Trigonometric Functions