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11-07-2018
Mathematics

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using the law of Sines, in triangle ABC, is angle C=145 degrees, b=7, c=33, what is angle B

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11-07-2018

By law of Sines:

c / sinC = b / sinB
33 / sin145 = 7 / sinB
sinB = sin145 * 7 / 33
sinB = 0.122
B = 6.99

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