It took Fred 12 hours to travel over pack ice from one town in the Arctic to another town 360 miles away. During the return jour
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Answer:
Step-by-step explanation:
Given that:
sin2xcos x + cos2xsin x = -1
Recall that;
SInAcosB + cosASinB = SIn (A+B)
SIn (2x +x) = -1
Sin (3x) = -1