If e1 and e2 respectively be the eccentricities of the ellipse and hyperbola 9x2 ndash 16y2 144 then...........

If e₁ and e₂ respectively be the eccentricities of the ellipse $\frac{x^{2}}{25}+\frac{y^{2}}{9}=1$ and hyperbola 9x² – 16y² = 144 then e₁e₂ =