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Magnitude of resultant of two vector `vec(A)` and `vec(B)` is equal to 2. angle between two vectors is `180^(@)` if `|vec(A)|=3` then find `|vec(B)|`

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Magnitude of resultant of two vector `vec(A)` and `vec(B)` is equal to 2. angle between two vectors is `180^(@)` if `|vec(A)|=3` then find `|vec(B)|`
A. 5
B. 3
C. 1
D. 4
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1 Answer

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Correct Answer - AC
3-B=2
or B-3=2
B=1 or 5
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