Reference Angles
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This document contains multiple sections from a math class on the unit circle. It defines the unit circle as a circle with radius of 1 unit where every point on the circle is 1 unit from the center. It notes that any point P on the unit circle can be represented as the coordinates (cosθ, sinθ) where θ is the angle in radians. The document instructs students to read about the unit circle and complete related homework problems.
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Reference Angles
- 1. Aim: What are reference angles? MB43 11/21/08 Lomas Do Now: For each angle, estimate which quadrant. a. θ = 145 o b. θ = 256 o c. θ = 309 o d. θ = 3 e. θ = 4 7 f. θ = 2 -3 cos θ = -1 3 Find the values for the other 5 trigonometric functions 1) 2) HW: Read 651-660 Do 660-1 #9-29col,33-51col
- 2. Aim: What is the unit circle? MB43 11/10/08 Lomas For each angle, estimate where and which quadrant it is located on the unit circle. a. θ = 125 o b. θ = 240 o c. θ = 329 o d. θ = 6 e. θ = 4 5 f. θ = 2 -1 HW: Read 614-621 Do 621 #1-7 Read 621-624 Do 624 #1,2,3,7,8
- 3. Aim: What is the unit circle? MB43 11/10/08 Lomas The Unit Circle every point on the circle is ONE UNIT away from the cente r x y P(x,y) or P(cos θ, sin θ) θ (1,0) (-1,0) (0,1) (0,-1) HW: Read 614-621 Do 621 #1-7 Read 621-624 Do 624 #1,2,3,7,8
- 4. Aim: What is the unit circle? MB43 11/10/08 Lomas What is theta? What are the six trigonometric functions of theta? HW: Read 614-621 Do 621 #1-7 Read 621-624 Do 624 #1,2,3,7,8
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