Multiple Choice In what quadrant does arcsin 13 lie A I B II

Multiple Choice: In what quadrant does arcsin 1/3 lie? A. I B. II C. III D. IV What is the amplitude of the function y = -4 cos 2x ? A. 2 B. pi C. 4 D. -4 Which quantity is undefined? A. sec pi B. cos 180 degree C. csc 180 degree D. tan pi What is the period of the function whose graph is shown below? A. 1 B. pi/2 C. pi D. 2 pi

Solution

arc sin1/2 =30° which lies in first quadrant.

9. Y=-4cos2x

This is of the form y=A cos(Bx-C) where amplitude A=4