`A` and `B` are the points of intersection of the line `y=2x + c` and the curve `x^2 +y^2=7`. `O`, is the origin. The lines `OA` and `OB` are at right angles if

The point of intersection of the curves y^(2) = 4x and the line y = x is

If the lines joining the origin to the points of intersection of the line y =mx +2 and the curve x^(2)+y^(2)=1 are right angles then

If the lines joining the origin to the points of intersection of the line y=mx+2 and the curve x^(2)+y^(2)=1 are at right-angles, then

If the lines joining the origin to the points of intersection of the line y=mx+2 and the curve x^(2)+y^(2)=1 are at right-angles, then

Find the equation of the lines joining the origin to the points of intersection of the line x+y=1 with the curve 4x^(2)+4y^(2)+4x-2y-5=0 and show that they are at right angles

Prove that The lines joining the origin to the points of intersection of the line 3x-2y =1 and the curve 3x^2 + 5xy -3y^2+2x +3y= 0 , are are at right angles.

If the lines joining the origin to the intersection of the line y=nx+2 and the curve x^2+y^2=1 are at right angles, then the value of n^2 is

If the lines joining the origin to the intersection of the line y=nx+2 and the curve x^2+y^2=1 are at right angles, then the value of n^2 is

If the lines joining the origin to the intersection of the line y=nx+2 and the curve x^2+y^2=1 are at right angles, then the value of n^2 is