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Question Practice

What is the relationship between the direction cosines of a line and the angle it makes with the axes?

Attempt the question, check the explanation, and continue with similar questions to build confidence before exams.

MCQ_SA
CBSE
Class 12
Mathematics
Mathematics Part - II
Three Dimensional Geometry
Question Bank

What is the relationship betwe...

Single Answer MCQ
Q-00078343

What is the relationship between the direction cosines of a line and the angle it makes with the axes?

1

Direction cosines are negative for obtuse angles.

2

Direction cosines sum to zero.

3

Direction cosines are the cosines of the angles.

4

All direction cosines are positive.

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Q1.

What are the direction cosines of a line?

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Q2.

If a line makes angles α, β, and γ with the x, y, and z axes, respectively, what is true about the direction cosines l, m, n?

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Q3.

What do direction ratios represent for a line in three-dimensional space?

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Q4.

What happens to the direction cosines if the direction of a line is reversed?

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