Find the angle between those lines whose direction ratios are as follo – InterviewSolution

InterviewSolution

1.	Find the angle between those lines whose direction ratios are as follows : (i) `(2,3,6)` and `(1,2,2)` (ii) `(4,-3,5)` and `(3,4,5)` (iii) `(1,2,1)` and `(4,-3,2)`
Answer» Correct Answer - (i) `cos^(-1)(20/21)` , (ii) `60^(@)` , (iii) `90^(@)`

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