5 Ifa + b + c = 0. The angle between a and band b and c are 150° and 120°,
respectively. Then, the magnitude of vectors a, b and c are in ratio of
a. 1:2:3
b. 1:2:13
c. 13:2:1
d. 2:13:1
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Answer:
I think it should be
(C) 13:2:1
Explanation:
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