Equation of pair of tangents

A pair of tangents are drawn from the origin to the circle x^(2)+y^(2)+20(x+y)+20=0, The equation of pair of tangent is

" The equation of pair of tangent to the ellipse S=0 from (x_(1),y_(1)) is

Combined equation of pair of tangent to the hyperbola x^(2) - y^(2) = 8 " is " 8x^(2) - 7y^(2) - 16x + 8 = 0 and equation of chord of contect is x = lambda , then value of lambda is __________

Let 2x^(2)+y^(2)-3xy=0 be the equation of a pair of tangents drawn from the origin O to a circle of radius 3 with centre in the first quadrant.If A is one of the points of contact, then the length of OA is

Find the equation of the pair of tangents drawn to the circle x^(2)+y^(2)-2x+4y+3=0 from (6,-5) .

Find the equation of the pair of tangents from the origin to the circle x^2 + y^2 + 2gx + 2fy+k^2 = 0 , and show that their intercept on the line y = h is 2hk/(k^2-g^2) times the radius of the circle.

Equation Of Pair Of Tangent And Director Circle

Equation Of Pair Of Tangent And Chord Of Contact