Further coordinate geometryFurther Coordinate Geometry: Problem involving Circle II Posted on 22nd September 201722nd September 2017 by TimGanA circle, C1, has a diameter AB where A is the point (6,-2) and B is the point (12,6). (a) Find the coordinates of the centre of the radius of C1.(b) Find the equation of C1.(c) Show that the equation of the tangent to the circle at A is 4y+3x=10. TimGan Further Coordinate Geometry: Problems involving CirclesFurther Coordinate Geometry: Problems involving two circles.