Find the length of side BC. Give your answer to 3 significant figures.
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Answer:
BC=19.385
Step-by-step explanation:
cosB=adjacent side/hypotenuse
Given that angle B=71°
cos71=0.325
adjacent side/hypotenuse=0.325
AB/BC=0.325
6.3/BC=0.325
BC=6.3/0.325
BC=19.385
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