First slide

Vectors

Question

If the angle between two non-zero vectors A and B is 120°, its resultant C will be

Easy

A

C = IA-BI
B

C < IA-BI
C

C > IA - BI
D

C = IA + BI

Solution

Resultant of two vectors lies between IA + BI and IA $-$ BI.
i.e. IA $-$ BI < C < IA+ BI

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