Pleasee help me out!! im really stuck on this:(

Solve the triangle. a = 21°, c = 105°, c = 5

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.

You are a male who just graduated from college with a bachelor's degree. you have a job paying $50,780.00/yr. a. how does your salary compare to the yearly median earnings for a male with a bachelor's degree? b. what is the difference between the yearly median earnings for a male with a bachelor's degree compared to a male who does not attend college after earning a high school diploma?