22 In the accompanying diagram, point P(0.6,–0.8) is on unit circle O.
What is the value of , to the nearest degree?
y
θ
O
x
P(0.6,–0.8)
23 A pulley that has a diameter of 8 inches is belted to a pulley that has a
diameter of 12 inches. The 8-inch-diameter pulley is running at
1,548 revolutions per minute. If the speeds of the pulleys vary inversely
to their diameters, how many revolutions per minute does the larger
pulley make?
[9]
[OVER]
Math. B – Jan. ’04