...again in R, show that the difference of the abscissae of Q and R is twice the latus rectum. Ex. 76. Find the locus of the point of intersection of two tangents to an ellipse which are inclined to one another at a constant angle. Ex. 77. - = l + ecos0 is the equation...

...intersection of two tangents to a parabola which mace an angle of 45° with one another. 2. Prove that the locus of the point of intersection of two tangents to a parabola at points on the curve whose ordinates are in a constant ratio is a parabola. 3. The two tangents from...

...at right angles. Find the locus of the point of intersection of tangents at PandQ. 15. Show that the locus of the point of intersection of two tangents to a parabola at points whose ordinates are in a constant ratio is a parabola. 1 6. The two tangents from a point...