If the line `lx+my+n=0` is tangent to the circle `x^(2)+y^(2)=a^(2)` , then find the condition.

If the line lx + my = 1 is a tangent to the circle x^(2) + y^(2) = a^(2) , then the point (l,m) lies on a circle.

If the line lx+my+n=0 is tangent to the circle x^2+y^2-2ax=0 then find the condition

If the line lx + my +n=0 is a tangent to the parabola y^(2)= 4ax , then-

If lx + my + n = 0 is tangent to the parabola x^(2)=y , them

If lx + my + n = 0 is tangent to the parabola x^(2)=y , them

The line lx+my+n=0 is a tangent to the curve y=x-x^2+x^3 , then

The line lx+my+n=0 is a tangent to the curve y=x-x^2+x^3 , then

If the line lx+my+n=0 s a tangent to the hyperboal (x^(2))/(a^(2))-(y^(2))/(b^(2))=1 , then show that a^(2)l^(2)-b^(2)m^(2)=n^(2)

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