PhysicsMedium202×since 2002Q8378Two vectors X→\overrightarrow XX and Y→\overrightarrow YY have equal magnitude. The magnitude of (X→\overrightarrow XX −-− Y→\overrightarrow YY) is n times the magnitude of (X→\overrightarrow XX + Y→\overrightarrow YY). The angle between X→\overrightarrow XX and Y→\overrightarrow YY is :Acos−1(−n2−1n2−1){\cos ^{ - 1}}\left( {{{ - {n^2} - 1} \over {{n^2} - 1}}} \right)cos−1(n2−1−n2−1)Bcos−1(n2−1−n2−1){\cos ^{ - 1}}\left( {{{{n^2} - 1} \over { - {n^2} - 1}}} \right)cos−1(−n2−1n2−1)Ccos−1(n2+1−n2−1){\cos ^{ - 1}}\left( {{{{n^2} + 1} \over { - {n^2} - 1}}} \right)cos−1(−n2−1n2+1)Dcos−1(n2+1n2−1){\cos ^{ - 1}}\left( {{{{n^2} + 1} \over {{n^2} - 1}}} \right)cos−1(n2−1n2+1)Check answerSkip