Let S, S' be the focil and BB' be the minor axis of the ellipse `(x^(2))/(a^(2)) + (y^(2))/(b^(2))
Channel: Doubtnut
Date: 17/05/2020

Let S, S' be the focil and BB' be the minor axis of the ellipse `(x^(2))/(a^(2)) + (y^(2))/(b^(2)) = 1.` If `angle BSS' = theta`, then the eccentricity e of the ellipse is equal to