Find the exact values of cos and sin for the angle measure.
5pi/6 radians

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

The ratio of rock songs to dance songs on jonathan’s mp3 player is 5: 6. the total number of rock and dance songs jonathan has is between 101 120. how many rock songs does he have?

Mario is constructing a frame for 10 in. by 8 in. photo. he wants the frame to be the same with all the way around in the same area of the frame and photo to be 120 square inches what is the dimension of the frame?