If a swimmer swims for 35.78 seconds t hen how do you estimate it?

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

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

Which statements about the system are true? check all that apply. y =1/3 x – 4 3y – x = –7 the system has one solution. the system consists of parallel lines. both lines have the same slope. both lines have the same y–intercept. the equations represent the same line. the lines intersect.