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Question

The angle between two vectors A and B,given that A.B=3 and A×B=33 is

A
30
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B
45
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C
60°
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Solution

The correct option is C 60°
We know that A.B=ABcos and ∣ ∣A×B∣ ∣=ABsinwhere is the angle between the vectors.So,A×BA.B=ABsinABcos=tan tan =333 tan=3=60

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