1. The radian is an alternative unit to the degree for angle measurement. a. True b. False 2. There are 360 radians in a circle. a. True b. False 3. The radian measure of an angle is defined as the length of the arc that subtends the angle divided by the radius of the circle. a. True b. False = sec x 4. COS X a. True b. False 5. COS IC a. True b. False 6. cos(x + y) = cosx + cosy a. True b. False 7. The graphs of the functions y = sinx and y = cos x have the same domain. a. True b. False 8. The graph of the function y = sin Ix has a period of 2. a. True b. False 9. The exact radian measure for an angle of 30 is a. b. 3 C. 2 d. 10. Determine the exact value of cos - 4 a. b. C. d. N/