EXERCISE - 12 (a)
Each question given below has four 2j+k. 6 -21 -2] +2k and ¿ -- +2+ k then
(a) apossible answers out of which only one
correct one
18-i + and have the same direction
(b) a and have opposite directions
(c) 6 and have opposite directions
(d) no pair of vectors have same direction
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