The centre of an ellipse is $C$ and $PN$ is any ordinate and $A$, $A’$ are the end points of major axis, then the value of $\frac{{P{N^2}}}{{AN\;.\;A'N}}$ is
The centre of an ellipse is $C$ and $PN$ is any ordinate and $A$, $A’$ are the end points of major axis, then the value of $\frac{{P{N^2}}}{{AN\;.\;A'N}}$ is
- A
$\frac{{{b^2}}}{{{a^2}}}$
- B
$\frac{{{a^2}}}{{{b^2}}}$
- C
${a^2} + {b^2}$
- D
$1$
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