SubArea: Points and vectorsLevel: AProject ID: 9000101801Accepted: 1Clonable: 0Easy: 1Among vectors a→=(−1;2;0), b→=(2;1;2), c→=(1;3;0) and d→=(−3;0;0) find a pair of vectors with equal length.b→, d→a→, c→a→, d→b→, c→