Originally Posted by

**Atav20** I have four problems I need my answers checked and explained in Baby Steps. I am trying to figure out the best way to solve these problems.

1. Convert pi/4 radians to degrees

My answer is 45 Degrees... Please explain best way to get this answer!

2. If a circle has a radius of 29cm, determine the length of an arc s subtended by an angle of 37 Degrees.

My answer... Please explain best way to get answer

s= 18.72738287cm

3. Find the point (x,y) on the unit circle which corresponds to teh angle -70pi/3.

a). Express your answer in radical form

b). Express your answer in decimal form

My answers... Please Explain easiest way to complete problems

a. (x,y) = (-1/2, SquareRoot of 3/2)

b. (x,y) = (-.5, .866025904)

4. Two pulleys are connected by a belt. The radius of one pulley is 9cm and the radius of the other is 77cm. If the larger one rotates once, how many times N does teh small one rotate?

My answer...please explain best way to complete problem

N= 77/9

Thank You for your help. I am terrible at Pre-Cal, and I just want to make sure I am completing these problems in the best way possible! I have 4 More to come!