I need help with these questions

1. Express each point in polar coordinates. a) A (4, -3) b) A (-3, 2) 2. Write the center and the radius of each polar equation a.)r = 6 sin 0 b.)r= -2 sin 0 c.)r = 5 cose d.)r= -9 cos0Graph each equation 1.r = 2 + sin0 2. r=4-4 sin8 3. r= 3+ cos0 4.r=3-3 cos0