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Question Practice

What is true when you find direction cosines and they do not add up to 1?

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 true when you find dir...

Single Answer MCQ
Q-00078350

What is true when you find direction cosines and they do not add up to 1?

1

The line does not exist.

2

The line is not directed.

3

The numbers are incorrect direction cosines.

4

The ratios need normalization.

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Continue with nearby questions to strengthen the same chapter concept while you still have the context fresh in mind.

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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