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  4. The angle between P and Q is θ Then| hat P× hat Q| is

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Q. The angle between $\overrightarrow{P}$ and $\overrightarrow{Q}$ is $\theta$ Then$|\hat {P}\times\hat {Q}|$ is

Motion in a Plane

Solution:

$| \hat{P} \times \hat{Q} | = 1 \times 1 \times sin \, \theta = sin \, \theta$ . Because $| \hat{P} | = | \hat{Q} | = 1$