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Grade: 12
        the direction ratio of a line are 2,3,7 then its direction cosiines are
2 years ago

Answers : (1)

Arun
23382 Points
							
Dear Mohit
 
We are given with direction ratios (2,3,7)
Its mod = (4+9+49)1/2 = 621/2
Hence direction cosines are
(2/621/2,  3/621/2  , 7/621/2 )
 
Regards
Arun(askIITians forum expert)
2 years ago
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