Find the equation of the tangents to (x-2)squad + (y+3)sqaud=16 which parallel to the y-axis
(x-2)^2 + (y+3)^2=16
circle
center at (2,-3), radius = 4
x = 2+4 = 6
and
x = 2-4 = -2
circle
center at (2,-3), radius = 4
x = 2+4 = 6
and
x = 2-4 = -2