Condition for y = mx + c to be a tangent to the circle ` x^(2) + y^(2) = a^(2) ` is

Find the condition for the line lx + my + n =0 is a tangent to the circle x^(2) + y^(2) = a^(2)

If y = mx + c is a tangent to the ellipse x^(2) + 2y^(2) = 6 , them c^(2) =

If y = mx + c is a tangent to the ellipse x^(2) + 2y^(2) = 6 , them c^(2) =

If y=4x+c is a tangent to the circle x^(2)+y^(2)=9 , find c.

The condition for a line y = 2x + c to touch the circle x^(2) + y^(2) = 16 is

The condition for a line y = 2x + c to touch the circle x^(2) + y^(2) = 16 is...

Find the conditions that the line (i) y = mx + c may touch the circle x^(2) +y^(2) = a^(2) , (ii) y = mx + c may touch the circle x^(2) + y^(2) + 2gx + 2fy + c = 0 .

If y=2x+c is tangent to the circle x^(2)+y^(2)=16 find c.