Question
Download Solution PDFComprehension
The projections of a directed line segment on the coordinate axes are 12, 4, 3 respectively.
What are the direction cosines of the line segment?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
- Relation between direction cosines and direction ratios
Where l, m, n are the direction cosines and a, b, c are the direction ratios.
Calculation:
We know that direction cosines is
Here a = 12, b = 4 and c = 3
Now,
∴ Direction cosines of the line segment = {12/13, 4/13, 3/13}
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