Conics HW help (1 Viewer)

[mrpotatoed]

E is ellipse where a=4,b=3 and centre (0,0) and P is the variable point (4costheta, 3sintheta). B and B' are the endpoints of the minor axis. The tangent at P meets the tangents at B and B' at C and C' respectively. Show that BC*B'C'=16.

I'm making an error somewhere but can't find it.

 

[InteGrand]

E is ellipse where a=4,b=3 and centre (0,0) and P is the variable point (4costheta, 3sintheta). B and B' are the endpoints of the minor axis. The tangent at P meets the tangents at B and B' at C and C' respectively. Show that BC*B'C'=16.

I'm making an error somewhere but can't find it.

Post your working, it might just be a very simple mistake.