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A man starts from the point P(-3, 4) and...

A man starts from the point P(-3, 4) and reaches point Q (0,1) touching x axis at R such that PR+RQ is minimum, then the point R is

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The correct Answer is:
0.6
For PR=RQ to be minimum,it should be the path of light.

`therefore anglePRA=angleQRM`
From similar triangles PAR and QMR.
`(AR)/(RM)=(PA)/(QM)`
or `(alpha+3)/(0-alpha)=(4)/(1)or alpha=-(3)/(5)`
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