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Kazeer [188]
4 years ago
8

Law of Sines. Find the

Mathematics
1 answer:
9966 [12]4 years ago
4 0

Answer:

\angle B=23.96\\\\\angle C=59.04

Step-by-step explanation:

\:The\:law\:of\:sines\:is:\\\\\frac{\sin A}{a}=\frac{\sin B}{b}=\frac{\sin C}{c}

with\\\\A=97\\\\a=22\\\\b=9\\\\c=19

so\:we\:have\\\\\frac{\sin 97}{22}=\frac{\sin B}{9}\\\\\sin B=\frac{9\sin 97}{22}\\\\B=\sin^{-1}(\frac{9\sin 97}{22})\\\\B\approx 23.96

You\:could\:use\:the\:law\:of\:sines\:again\\\\But\:remember\:that\:the\:sum\:of\:angles\:is\:180\\\\\angle A+\angle B+\angle C=180\\\\97+23.96+\angle C=180\\\\120.96+\angle C=180\\\\\angle C=59.04

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