st-line

Question: The length of the perpendicular from the point $(b,a)$to the line $\frac{x}{a}-\frac{y}{b}=1$, is

1) $\left| \frac{{{a}^{2}}-ab+{{b}^{2}}}{\sqrt{{{a}^{2}}+{{b}^{2}}}} \right|$

2) $\left| \frac{{{b}^{2}}-ab-{{a}^{2}}}{\sqrt{{{a}^{2}}+{{b}^{2}}}} \right|$

3) $\left| \frac{{{a}^{2}}+ab-{{b}^{2}}}{\sqrt{{{a}^{2}}+{{b}^{2}}}} \right|$

4) None of these

Solution:

Explanation: No Explanation

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