Unit 3

1. Determine the following:

a. Given a sector with an arc length of 4.5 cm and a radius of 3 cm, find the angle subtended by the arc.

b. Given a sector with an angle of 13 radians and a radius of 7 m, find the arc length.

2. Fill in the table. Show your work and keep answers exact.

Degrees	Radians
	452??
2300

3. Determine the values of ? if 0 ? ? ? 2? given that cosx = ?0.3178. Explain your process.

4. Determine exact values of ? if 0 ? ? ? 2? given that tan?=?3?. Explain your process.

5. Describe the transformations on the given cosine function.

f(x) = 0.5cos[0.5(x? ?)]? 12

6.Find an equation for each function and explain your thought process.

a. A sinusoidal function with an amplitude of 15 units, a period of 2??, a phase shift of7?? radians to the right, axis aty=33

b.

2 2 -2