Hello, ck3!

Sorry, all your answers are off . . .

1. The degree measure of an angle is .

If the arc that subtends angle has length , find the radius of the circle.

You're expected to know this formula: .

. . where is the arc length, is the radius, and is the central anglein radians.

We are given: .

Then becomes: .

2. Find the smallest positive solution of: , using radian measure.

We have: .

Then: .

For a positive angle, add

3. For a circle of radius 15 cm, an arc length of 36 cm corresponds to a central angle of?

We are given: .

Then becomes: .