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`.

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

The equation of tangents drawn from the origin to the circle x^2+y^2-2rx-2hy+h^2=0

The equations of the tangents drawn from the origin to the circle x^2 + y^2 - 2px - 2qy + q^2 = 0 are perpendicular if (A) p^2 = q^2 (B) p^2 = q^2 =1 (C) p = q/2 (D) q= p/2

Show that the equations of the tangents drawn from the origin to the circle x^(2)+y^(2)-2rx-2hy+h^(2)=0 are x=0 and (h^(2)-r^(2))x-2rhy=0

The pair of tangents from origin to the circle x^(2)+y^(2)+4x+2y+3=0 is

Tangents drawn from the point (4, 3) to the circle x^(2)+y^(2)-2x-4y=0 are inclined at an angle

The angle between the tangents drawn from the origin to the circle x^(2) + y^(2) + 4x - 6y + 4 = 0 is

The tangents drawn from origin to the circle x^2+y^2-2ax-2by+b^2 are perpendicular to each other, if a) a-b =1 b) a+b=1 c) a^2-b^2 =0 d) a^2+b^2=1

A pair of tangents are drawn from the origin to the circle x^2+y^2+20(x+y)+20=0 . Then find its equations.

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