উপবৃত্ত এর বিভিন্ন উপাদানসমূহ নির্ণয়
and are the foci of an ellipse of major axis of length 10 units, and P is any point on the ellipse such that the perimeter or triangle is 15. Then the eccentricity of the ellipse is
Let a>b
then, length of major axis =10
⇒a=5
Perimeter of triangle PS1S2 is 15
⇒2a+2ae=15
⇒10+10e=15
e=0.5