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Name: Date: School: Facilitator: 10.03 The Unit Circle Read each question carefully and fill-in your answer. 1. What are the three most common angles to use a reference angles? 2. What is the radian measure for 45°? 3. What is the degree measure for 6 ? 4. Within the unit circle, which direction will produce negative angles? 5. Determine the correct signs for cosine and sine in each quadrant. Fill-in the space provided with “pos” for positive or “neg” for negative. 9. Fourth Quadrant: cosine: pos sine: neg Fill-in the space provided with your work for each question. 10. Explain why ( cos , sin ) = ( 3 2 , 1 2 ) for 30°. Include a drawing if necessary.
11. Complete the unit circle below by labeling degrees and radians for A – G in the table below.
12. Complete the unit circle below with the coordinates for the third and fourth quadrants. Use the bank of coordinates to complete the table below matching the correct degrees and the corresponding coordinates. Bank of Coordinates
(0, 1), , 3 2 ), ( 2 2 , ¿ ( ¿ ( 3 2 , , ( 2 2 ( 1 2 Based on the corresponding degrees, enter the coordinates using the bank of coordinates provided above. Degrees Coordinates 90° (0, 1) 180° ( 1, 0), 210° , 3 2 ) 225° , 2 2 ), 240° , 1 2 ), 270° 1 2 ¿ 300° 1 2 315° 2 2 ), 330° 3 2 360° (1, 0),
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