Q.

If vectors A and B have an angle θ between them, then value of |A^-B^| will be

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a

2 cosθ2

b

2 tanθ2

c

2 sinθ2

d

None of these

answer is C.

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Detailed Solution

|A^-B^|=1+1-2×1×1×cosθ=2sinθ2Angle between A^ and  B^ is also θ, but their magnitudes are 1.
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