3. Write the equations below in rectangular (Cartesian) coordinates and then sketch their graphs. A. r sin(0) = 3 B. r = 5 1 C. r = D. r = 10 cos(0) 1 - sin(0) 4. Write the equations below in polar coordinates. A. x=6 B. x² + y² = 36 C. x2 y2 1. (Simplify to the form r² = sec(A0).) - D. y=4x²-2x. (Simplify to r = A sec(0) + B sec(0) tan(0).)