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The length of the perpendicular from the...

The length of the perpendicular from the origin on the line `(x sin alpha)/(b ) - (y cos alpha)/(a )-1=0` is

A

`(|ab|)/(sqrt(a^2cos^2alpha-b^2sin^2 alpha))`

B

`(|ab|)/(sqrt(a^2cos^2alpha+b^2sin^2 alpha))`

C

`(|ab|)/(sqrt(a^2sin^2alpha-b^2cos^2 alpha))`

D

`(|ab|)/(sqrt(a^2sin^2alpha+b^2cos^2 alpha))`

Text Solution

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The correct Answer is:
D
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