UPSC NDA Math Model Paper 9

Comparing

x2

144

+

y2

169

=1 with

x2

a2

+

y2

b2

=1 we find that a = 12, b = 13 and a < b.
∴ The length of the Major axis = 2b = 26.
⇒ Length of Semi-Major axis = b = 13.
Length of Minor axis = 2a = 24.