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Please help. Sine and Cosine rules
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Please help. Sine and Cosine rules

Please help. Sine and Cosine rules-example-1
User Shamir
by
5.3k points

1 Answer

2 votes

Answer:

a=41.8 BC=2.8

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

User Guillem Vicens
by
4.4k points
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