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For positive l, m and n, if the planes x...

For positive l, m and n, if the planes `x = my + mz, y =1z+ nx, z=mx+ 1y` intersect in a straight, line, then:
The equation of the straight line is `x/a=y/b=z/c,` where the ordered traid `(a,b,c)` is :

A

`sqrt(1-l^(2)) , sqrt(1- m ^(2)), sqrt(1-n ^(2))`

B

1,m and n

C

`(1)/(sqrt(1-I ^(2))), (m)/(sqrt(1-m^(2)))and (n)/(sqrt(1- n ^(2))`

D

None of these

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The correct Answer is:
A
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