1.

Find the direction cosines of the two lines whichare connected by th relations. `l-5m+3n=0a n d7l^2+5m^2-3n^2=0`A. `pm(-1)/(sqrt(6)), pm (1)/(sqrt(6)), pm (2)/(sqrt(6))`B. `pm (1)/(sqrt(6)), pm (1)/(sqrt(6)), pm (-2)/(sqrt(6))`C. `pm (2)/(sqrt(6)), pm (2)/(sqrt(6)), pm (-1)/(sqrt(6))`D. `pm (2)/(sqrt(6)), pm (2)/(sqrt(6)), pm (1)/(sqrt(6))`

Answer» Correct Answer - A


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