If from any point P on the circle `x^2+y^2+2gx+2fy+c=0` tangents are drawn to the circle `x^2+y^2+2gx+2fy+csin^2alpha+(g^2+f^2)cos^2alpha=0` then angle between the tangents is

If from any point P on the circle x^2+y^2+2gx+2fy+c=0, tangents are drawn to the circle x^2+y^2+2gx+2fy+csin^2alpha+(g^2+f^2)cos^2alpha=0 , then find the angle between the tangents.

If from any point P on the circle x^2+y^2+2gx+2fy+c=0, tangents are drawn to the circle x^2+y^2+2gx+2fy+csin^2alpha+(g^2+f^2)cos^2alpha=0 , then find the angle between the tangents.

If from any point P on the circle x^2+y^2+2gx+2fy+c=0, tangents are drawn to the circle x^2+y^2+2gx+2fy+csin^2alpha+(g^2+f^2)cos^2alpha=0 , then find the angle between the tangents.

From any point on the circle x^(2)+y^(2)+2gx+2fy+c=0 tangents are drawn to the circle x^(2)+y^(2)+2gx+2fy+c sin^(2) alpha +(g^(2)+f) cos^(2) alpha=0 . The angle between the tangents is

If from any point P on the circle x^(2)+y^(2)+2gx+2fy+c=0, tangents are drawn to the circle x^(2)+y^(2)+2gx+2fy+c sin^(2)alpha+(g^(2)+f^(2))cos^(2)alpha=0 ,then the angle between the tangents is: (A) alpha (B) 2 alpha (C) (alpha)/(2) (D) (alpha)/(3)

If from any point P on the circle x^(2)+y^(2)+2gx+2fy+c=0, tangents are drawn to the circle x^(2)+y^(2)+2gx+2fy+c sin^(2)alpha+(g^(2)+f^(2))cos^(2)alpha=0, then find the angle between the tangents.

Length of tangent drawn from any point on the circle x^2+y^2+2gx + 2fy +c=0 to the circle : x^2+y^2+2gx+2fy+c'=0 is :