Find unit vector in direction of ā = 3î + 4ĵ:
A(1/3)î + (1/4)ĵ
B3î + 4ĵ
Cî + ĵ
D(3/5)î + (4/5)ĵ
Answer & Solution
Correct answer: D. (3/5)î + (4/5)ĵ
|ā| = 5. Unit vector â = ā/|ā| = (3/5)î + (4/5)ĵ.
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