Hi there friends,
I've been doing this question:
P is a point on the ellipse with equation x^2/a^2 +y^2/b^2 = 1 with focus at S.
The normal at P intersects the X-axis at Q. Show that QS=ePS.
I let my co-ordinates by (x1, y1), found the point Q and distance of PS.
I then tried to prove QS = ePS using LHS & RHS.
LHS went fine, but RHS I could not figure out!!
Looking at the solutions our teacher did, he used (acos(theta), bsin(theta)) and he proved QS = ePS
Are we meant to always use parametric form for questions where no actual numerical values are provided??
Please help! Any help is appreciated tbh!!
Thanks for even looking![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
I've been doing this question:
P is a point on the ellipse with equation x^2/a^2 +y^2/b^2 = 1 with focus at S.
The normal at P intersects the X-axis at Q. Show that QS=ePS.
I let my co-ordinates by (x1, y1), found the point Q and distance of PS.
I then tried to prove QS = ePS using LHS & RHS.
LHS went fine, but RHS I could not figure out!!
Looking at the solutions our teacher did, he used (acos(theta), bsin(theta)) and he proved QS = ePS
Are we meant to always use parametric form for questions where no actual numerical values are provided??
Please help! Any help is appreciated tbh!!
Thanks for even looking