What is the explanation of the answer

Asked by  | 20th Feb, 2010, 08:59: PM

Expert Answer:

The line makes equal angles with the three coordinate axes.

α = β = γ

cosα = cosβ = cosγ

The relation of direction cosines,

cos2α + cos2β + cos2γ = 1

3cos2α = 1

cos2α = 1/3

cosα = 1/3 = cosβ = cosγ

Hence the direction cosines are, 1/3,1/3,1/3.

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Team,

TopperLearning.

 

Answered by  | 21st Feb, 2010, 06:11: AM

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