Name:

1. The following graph contains the pure form of a 8 Hz (cycles per second) wave for a time interval of one second. What is the period?

(A)0.125
(B)8
(C)π
(D)2

2. Find the measure of the central angle, in degrees, that intercepts an arc of length 16 feet on a circle of radius 6 feet.

(A)152.79°
(B)480°
(C)π
(D)125°

3. For all real numbers x, cos(99x) + sin(99x) =

(A)0
(B)1
(C)cos(198x)
(D)sin(198x)

4. Find all solutions to sin 3x = 1, if 0 < x < π.