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Indrani Korpal
Asked: 2022-10-31T12:14:12+05:30 In:

Which of the triplet can not represent direction cosines of a line ?
A. `((2)/(5), (3)/(5), (4)/(5))`
B. `((1)/(sqrt(3)),(1)/(sqrt(3)),(1)/(sqrt(3)))`
C. `((3)/(sqrt(50)),(3)/(sqrt(50)),(3)/(sqrt(50)))`
D. `((4)/(sqrt(77)),(4)/(sqrt(77)),(4)/(sqrt(77)))`

Which of the triplet can not represent direction cosines of a line ?
A. `((2)/(5), (3)/(5), (4)/(5))`
B. `((1)/(sqrt(3)),(1)/(sqrt(3)),(1)/(sqrt(3)))`
C. `((3)/(sqrt(50)),(3)/(sqrt(50)),(3)/(sqrt(50)))`
D. `((4)/(sqrt(77)),(4)/(sqrt(77)),(4)/(sqrt(77)))`
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  1. Correct Answer – A

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