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Questions  

Equation of a line through (5,3,6)and parallel to zaxis is

a
x−50=y−31=z−60
b
x−50=y−30=z−61
c
x−51=y−32=z−65
d
x−51=y−30=z−60

detailed solution

Correct option is B

The direction cosines of  z- axis is ⟨0,0,1⟩The equation of the line passing through the point 5,3,6 and having direction cosines ⟨0,0,1⟩ is x−50=y−30=z−61

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