Find |u v| if i) - Vidyadip

Question

Find $|\bar{u} \times \bar{v}|$ if
i)

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Answer

ii) If we sketch $\bar{u}$ and $\bar{v} \quad$ starting from the same initial point, we see that the angle between them is $60^{\circ}$. we have $|\bar{u} \times \bar{v}|=|\bar{u}||\bar{v}| \sin \theta=(12)(16) \sin 60^{\circ}=192 \frac{\sqrt{3}}{2}=96 \sqrt{3}$.

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