Download PI A2.A.60: Sketch the unit circle and represent angles

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Trigonometry Journal: Unit Circle
www.jmap.org
NAME:_____________________________
P.I. A2.A.60: Sketch the unit circle and represent angles in standard position
1. Explain how to find the coordinates of a point where the terminal side of an angle bisects the unit circle.
2. Write a positive angle in radian measure and give its coterminal negative angle in radians.
3. Find two coterminal angles that are in the third quadrant.
Trigonometry Journal: Unit Circle
www.jmap.org
Answers may vary. Sample: The point where the terminal side of an angle bisects the unit circle has an
x-coordinate equal to the cosine of the angle and the y-coordinate equal to the sine of the angle.
[1] Determine the sign of each coordinate based on which quadrant the terminal side is in.
[2]
Answers may vary. Sample:
3π
π
and −
2
2
[3] Answers may vary. Sample: 210° , − 150°