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Two vectors A and B have magnitudes 6 units and 8 units, respectively. Find |A-B| if the angle between two vectors is $120 °$

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Correct option is A

Magnitude of vector A=6 Units. Magnitude of vector B=8 units.Now resultant =|A-B| will be equal to A2+B2-2ABcos(θ)when angle between them is 120 degree:Then |A-B|=62+82-(2)(6)(8)cos(120)=100+48( since cos(120)=-1/2)=148 units

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Two vectors A and B have magnitudes 6 units and 8 units, respectively. Find |A-B| if the angle between two vectors is 120°

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material

Two vectors A and B have magnitudes 6 units and 8 units, respectively. Find |A-B| if the angle between two vectors is $120 °$