1.If vectors 2i^−j^+k^2\hat{i} - \hat{j} + \hat{k}2i^−j^+k^, i^+2j^−3k^\hat{i} + 2\hat{j} - 3\hat{k}i^+2j^−3k^ and 3i^+aj^+5k^3\hat{i} + a\hat{j} + 5\hat{k}3i^+aj^+5k^ are coplanar, then the value of aaa isa.222b.−2-2−2c.−1-1−1d.−4-4−4Login to continueOnly logged in users canattempt or see the solution.