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.

Equation of tangents drawn from (0, 0) to x^(2) + y^(2) - 6x -6y + 9 = 0 are

Find the angle between the tangents drawn from (3, 2) to the circle x^(2) + y^(2) - 6x + 4y - 2 = 0

Find the angle between the pair of tangents drawn from (0,0) to the circle x^(2) + y^(2) - 14 x + 2y + 25 = 0.

Find the angle between the pair of tangents drawn from (1, 3) to the circle x^(2) + y^(2) - 2 x + 4y - 11 = 0

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

Show that the locus of P where the tangents drawn from P to x^(2)+y^(2)=a^(2) are perpendicular to each other is x^(2)+y^(2)=2a^(2)

The tangents drawn from the origin to the circle x^2+y^2-2rx-2hy+h^2=0 are perpendicular if

Show tha the tangents drawn from the origin in to the circle x^(2)+y^(2)-2ax-2by+a^(2)=0 are perpendicular if a^(2)-b^(2)=0 .

Find the equations of the tangents drawn to the curve y^2-2x^3-4y+8=0.

Find the pair of tangents from the origin to the circle x^(2) + y^(2) + 2gx + 2fy + c = 0 and hence deduce a condition for these tangents to be perpendicular.