The length of the perpendicular from the point \[(b,a)\]to the line \[ – McqOptions

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1.	The length of the perpendicular from the point \[(b,a)\]to the line \[\frac{x}{a}-\frac{y}{b}=1\], is
A.	\[\left\| \frac{{{a}^{2}}-ab+{{b}^{2}}}{\sqrt{{{a}^{2}}+{{b}^{2}}}} \right\|\]
B.	\[\left\| \frac{{{b}^{2}}-ab-{{a}^{2}}}{\sqrt{{{a}^{2}}+{{b}^{2}}}} \right\|\]
C.	\[\left\| \frac{{{a}^{2}}+ab-{{b}^{2}}}{\sqrt{{{a}^{2}}+{{b}^{2}}}} \right\|\]
D.	None of these
Answer» C. \[\left\| \frac{{{a}^{2}}+ab-{{b}^{2}}}{\sqrt{{{a}^{2}}+{{b}^{2}}}} \right\|\]

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