Q. If $tan θ_{1} \cdot tan θ_{2} = - \frac{a ^{2}}{b ^{2}}$ then the chord joining two points $θ_{1} & θ_{2}$ on the ellipse $\frac{x ^{2}}{a ^{2}} + \frac{y ^{2}}{b ^{2}} = 1$ will subtend a right angle at :

124 110 Conic Sections Report Error

A

focus

B

centre

C

end of the major axis

D

end of the minor axis

Solution:

Correct answer is (b) centre