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Find the direction cosines of the two li...

Find the direction cosines of the two lines which are connected by th relations. `l-5m+3n=0a n d7l^2+5m^2-3n^2=0`

A

`1/sqrt14,2/sqrt14,3/sqrt14`

B

`(-1)/sqrt14,2/sqrt14,3/sqrt14`

C

`1/sqrt14,(-2)/sqrt14,3/sqrt14`

D

`1/sqrt14,2/sqrt14,(-3)/sqrt14`

Text Solution

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The correct Answer is:
A
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DISHA PUBLICATION-THREE DIMENSIONAL GEOMETRY -Exercise -2 : Concept Applicator
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