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sammy [17]
2 years ago
10

Please help. Sine and Cosine rules

Mathematics
1 answer:
kodGreya [7K]2 years ago
3 0

Answer:

a=41.8 BC=2.8

Step-by-step explanation:

sin30/6=sinx/8

8*sin30=6sinx

4=6sinx

sin^-1(4/6)

angle a

cosine rule

bc^2=3^2 +5^2-2(3)(5)*cos30

BC^2=\sqrt8.019237886\\

BC=2.83

2.8

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