Angle between tangents drawn to `x^(2) +y^(2) -2x -4y +1=0` at the point where it is cut by the line, `y =2x +c`, is`(pi)/(2)` , then `:`

The angle between tangents to the parabola y^(2)=4ax at the points where it intersects with teine x-y-a=0 is (a>0)

Find the angle between the tangents drawn to y^(2)=4x, where it is intersected by the line y=x-1

The angle between the tangents to the parabola y^(2)=4ax at the points where it intersects with the line x-y-a=0 is (pi)/(3) (b) (pi)/(4)(c)pi(d)(pi)/(2)

Tangents are drawn to the circle x^(2) + y^(2) = 12 at the points where it is met by the circle x^(2) + y^(2) - 5x + 3y -2 = 0 , find the point of intersection of these tangents.

If the angle between tangents drawn to x^(2)+y^(2)+2gx+2fy+c=0 from (0,0) is (pi)/(2), then

Tangents are drawn to the ellips (x^(2))/(a^(2))+(y^(2))/(b^(2))=a+b at the points where it is cut.y by the line (x)/(a^(2))cos theta-(y)/(b^(2))sin theta=1 then the point of intersection of Tangents