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9-45.

What are the coordinates of points $P$ and $Q$ on the unit circle at right?

$P: \left(\text{cos}\left(50^\circ\right), \text{sin}\left(50^\circ\right)\right)$
$Q: \left(\text{cos}\left(110^\circ\right), \text{sin}\left(110^\circ\right)\right)$