1.The vectors a⃗=i^+2j^+3k^\vec{a} = \hat{i} + 2\hat{j} + 3\hat{k}a=i^+2j^+3k^, b⃗=2i^−j^+k^\vec{b} = 2\hat{i} - \hat{j} + \hat{k}b=2i^−j^+k^ and c⃗=3i^+j^+4k^\vec{c} = 3\hat{i} + \hat{j} + 4\hat{k}c=3i^+j^+4k^ are so placed that the end point of one vector is the starting point of the next vector. Then the vectors area.not coplanarb.coplanar but cannot form a trianglec.coplanar but can form a triangled.coplanar and can form a right angled triangleLogin to continueOnly logged in users canattempt or see the solution.