If $\bar{u}, \bar{v}$ are two vectors represented in the following figure, then the value of $|\bar{u}…

If $\bar{u}, \bar{v}$ are two vectors represented in the following figure, then the value of $|\bar{u} \times \bar{v}|=$
  1. $20$
  2. $10 \sqrt{3}$
  3. $10$
  4. $5 \sqrt{3}$

Solution

$\vec{u} \times \vec{v}|=| \vec{u}|| \vec{v} \mid \sin \theta=4 \times 5 \times \sin 150^{\circ}=20 \times \frac{1}{2}=10$

Asked in: MHT CET 2022 (07 Aug Shift 2)

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