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posted by -Untamed- Monday, October 24, 2011 at 11:33pm.
In triangle PQR, angle P is 20 degres, angle R is 150 degrees, and QR is 6, the length of PQ is...?
simple application of the sine law PQ/sin150 = 6/sin20 PQ = 6sin150/sin20 = ....
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