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Question Practice

How is a line's direction changed when its direction cosines are reversed?

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

How is a line's direction chan...

Single Answer MCQ
Q-00078348

How is a line's direction changed when its direction cosines are reversed?

1

The modular values increase.

2

The signs of the direction cosines change.

3

Direction ratios become negative.

4

The line's angle doubles.

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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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