Find the condition that the tangents
drawn from `(0, 0)` to `S -= x^(2) + y^(2) + 2 gx + 2fy + c = 0` be perpendicular to each lt brgt other.

Find the condition that the tangents drawn from (0, 0) to S -= x^(2) + y^(2) + 2 gx + 2fy + c = 0 be perpendicular to each other.

Find the conditions that the tangents drawn from the exteriorpoint (g,f) to S= x^(2) + y ^(2) + 2gx + 2fy + c=0 are perpendicular to each other.

Fing the condition that the tangents drawn from the exterior point (g, f) to S -= x^(2) + y^(2) + 2 gx + 2fy + c=0 are perpen- dicular to each other.

Tangents drawn from the origin to the circle x^(2)+y^(2)+2gx+2fy+f^(2)=0 are perpendicular if

The locus of a point such that the tangents drawn from it to the circle x^(2)+y^(2)-6x-8y=0 are perpendicular to each other is

The tangents drawn from the origin to the circle : x^2+y^2-2gx-2fy+f^2=0 are perpendicular if:

The condition that the pair of tangents drawn from origin to the circle x^(2)+y^(2)+2gx+2fy+c=0 may be at right angle is

The condition that the pair of tangents drawn from origin to circle x^(2)+y^(2)+2gx+2fy+c=0 may be at right angles is

The condition that the pair of tangents drawn from origin to circle x^(2)+y^(2)+2gx+2fy+c=0 may be at right angles is