MathematicsMedium249×since 2002Q2376An angle between the lines whose direction cosines are gien by the equations, lll + 3m + 5n = 0 and 5lllm −-− 2mn + 6nlll = 0, is :Acos−1(13){\cos ^{ - 1}}\left( {{1 \over 3}} \right)cos−1(31)Bcos−1(14){\cos ^{ - 1}}\left( {{1 \over 4}} \right)cos−1(41)Ccos−1(16){\cos ^{ - 1}}\left( {{1 \over 6}} \right)cos−1(61)Dcos−1(18){\cos ^{ - 1}}\left( {{1 \over 8}} \right)cos−1(81)Check answerSkip