Question

Equation of the tangent to an ellipse is given find slope

Answer 1

while if D = 0, or a2m2 + b2 = c2 a line is the tangent to the ellipse thus, it is the tangency condition. then b2x1x + a2y1y = a2b2 is the equation of the tangent at the point P1(x1, y1) on the ellipse. intersection with the circle. The tangent of the circle at Pc intersects the x-axis at Px.