The circle with radius 1 and centre being foot of the perpendicular from `(5,4)` on y-axis, is `x^2+y^2-8x-15=0`

Find he foot of the perpendicular from (2,3) to the line 4x-5y+8=0 .

Find the length and the foot of the perpendicular drawn from the point (2,-1,5) to the line (x-11)/(10)=(y+2)/(-4)=(x+8)/(11)

Find the length and the foot of the perpendicular drawn from the point (2, -1,5) to the line (x -11)/10=(y + 2)/-4=(z+ 8)/-11

Find the radius and centre of the circle of the circle x^(2) + y^(2) + 2x + 4y -1=0 .

Find the radius and centre of the circle of the circle x^(2) + y^(2) + 2x + 4y -1=0 .

Find the centre and radius of the circles x^2+y^2-8x+10 y-12=0

The circle with centre (4,-1) and touching x -axis is x^(2)+y^(2)-8x+2y+16=0

Find the centre and radius of the following circles : 4x^2 + 4y^2 - 4x + 12y - 15 = 0