Pg. 251: 17,20,21,27,37

Lesson 19 - 6.3 #17 What angle in radian correspond to ¾ rotation?	Lesson 19 - 6.3 #20 Find arc length of 45 deg of radius 6.2.
Lesson 19 - 6.3 #21 Find arc length of -180 deg of radius 6.2.	Lesson 19 - 6.3 #27 Find radius of circle with arc length of 30 cm suspended by an arc length of 3 radians.
Lesson 19 - 6.3 #37 Find arc length of swinging bob from a string of length 3 feet and total displacement 10 deg (5 + 5 deg).