If A = 5 units B = 6 units and , then what is the angle between and

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$60 °$

$150 °$

$30 °$

$90 °$

answer is A, D.

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Detailed Solution

$| \vec{A} \times \vec{B} | = 15 = A B \sin θ = 5 \times 6 \sin θ o r \sin θ = \frac{15}{30} = \frac{1}{2} = \sin 30 ° o r \sin 150 ° o r θ = 30 ° o r 150 °$

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