Find the angle which the common chord of `x^2+y^2-4x=0` and `x^2+y^2=16` subtends at the origin.

The common chord of the circles x^(2)+y^(2)-4x-4y=0 and 2x^(2)+2y^(2)=32 subtends at the origin an angle equal to

The common chord of x^(2)+y^(2)-4x-4y=0 and x^(2)+y^2=4^(2) subtends and angle alpha at the origin, then alpha equals

Find the angle of intersection of curve x^2+y^2-4x-1=0 and x^2+y^2-2y-9=0

(A) Number of values of a for which the common chord of the circles x^(2)+y^(2)=8 and (x-a)^(2)+y^(2)=8 subtends a right angle at the origin is

If the common chord of the circles x^(2)+(y-2)^(2)=16 and x^(2)+y^(2)=16 subtend a angle at the origin then lambda is equal to

Length of common chord of the curve y^(2)-4x-4=0 " and "4x^(2)+9y^(2)=36 is

The length of the common chord of the parabolas y^(2)=x and x^(2)=y is