Provide a radian measure of an angle that is 5/8 of a revolution counterclockwise from the x-axis.

Find the value of the cosine for angle a

If anyone has done the algebra 2 chaos theory portfolio would you be wiling to me? i kind of know what i'm doing i just don't know if i'm doing it right.

The area of a rectangle is 54x^9y^8 square yards.if the length of the rectangle is 6x^3y^4 yards,which expression represents the width of the rectangle in yards