An angle between the lines whose direction number are 1, -2, 1 and -6, – InterviewSolution

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1.	An angle between the lines whose direction number are 1, -2, 1 and -6, -1, 4 isA. `(pi)/(6)`B. `(pi)/(4)`C. `(pi)/(3)`D. `(pi)/(2)`
Answer» Correct Answer - D

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