The resultant of two vectors A→ and B→ is perpendicular to the vector A→ and its magnitude is equal to half of the magnitude of vector B→ figure. The angle between A→ and B→ is
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a
120∘
b
150∘
c
135∘
d
None of these
answer is B.
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Detailed Solution
cosβ=RB=12⇒β=60∘ Angle between A→ and B→=90∘+β=150∘
The resultant of two vectors A→ and B→ is perpendicular to the vector A→ and its magnitude is equal to half of the magnitude of vector B→ figure. The angle between A→ and B→ is