5. (a) Convert the point written in rectangular coordinates (5V/3, -5) into polar coordinates with r > 0 and 0 E [0, 27). (b) Convert the point expressed in polar coordinates (-2,0) into rect- angular coordinates. (c) Express the equation of a circle in R' with radius 2 and center 2) in polar coordinates. Hint : What is the equation of this circle in rectangular coordinates? Recall the standard form for an equation of a circle in R2 of radius R and center (a, b) is (x - a)2 + (y -b)= R2