Pre-Calculus Homework Solutions 10

# Pre-Calculus Homework Solutions 10 - 1 m IBR 2 43 m(angle...

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43. m (angle of reflection) 5 ¬ } 1 2 } ? m / IBR 5 ¬ } 1 2 } (62) 5 ¬ 31 BN #\$ is at a right angle to the barrier. So m / IBA 5 90 2 31 or 59. 44. You can only compare the measures of the angles. The arcs indicate both measures are the same regardless of the length of the rays. 45. 1, 3, 6, 10, 15 46. 3 rays: (3 ± 2) 4 2 5 3 angles; 4 rays: (4 ± 3) 4 2 5 6 angles; 5 rays: (5 ± 4) 4 2 5 10 angles; 6 rays: (6 ± 5) 4 2 5 15 angles 47. 7 rays: (7 ± 6) 4 2 5 ¬ 21 angles 10 rays: (10 ± 9) 4 2 5 ¬ 45 angles 48. a 5 } n ( n 2 2 1) } ,for a 5 number of angles and n 5 number of rays 49. Sample answer: A degree is } 3 1 60 } of a circle. Answers should include the following. •P lace one side of the angle to coincide with 0 on the protractor and the vertex of the angle at the center point of the protractor. Observe the point at which the other side of the angle intersects the scale of the protractor.
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