The condition that the chord `x cosalpha + y sinalpha = `p of `x^2+y^2=a^2` may subtend a right angle at the centre is `a^2=lamdap^2` then `lamda` is

The condition that the chord xcosalpha+ysinalpha-p=0 of x^2+y^2-a^2=0 may subtend a right angle at the center of the circle is

The condition that the chord xcos alpha +ysin alpha -p=0 of x^2+y^2-a^2=0 may subtend a right angle at the centre of the circle is

The condition that the chord xcosalpha+ysinalpha-p=0 of x^2+y^2-a^2=0 may subtend a right angle at the center of the circle is _

The condition that the chord x cos alpha+y sin alpha-p=0 of x^(2)+y^(2)-a^(2)=0 may subtend a right angle at the center of the circle is

The condition that the chord a x cos alpha +y sin alpha -p=0" of "x^(2)+y^(2)-a^(2)=0 subtend a right angle at the centre of the circle is

Find the condition for the chord lx + my=1 of the circle x^(2)+y^(2)=a^(2) to subtend a right angle at the origin.

The condition that the chord of contact of the point (b,c) w.r.t. to the circle x^(2)+y^(2)=a^(2) should substend a right angled at the centre is

Find the condition that the chord of contact of tangents from the point (alpha, beta) to the circle x^2 + y^2 = a^2 should subtend a right angle at the centre. Hence find the locus of (alpha, beta) .

Find the condition that the chord of contact of tangents from the point (alpha, beta) to the circle x^2 + y^2 = a^2 should subtend a right angle at the centre. Hence find the locus of (alpha, beta) .