Please help. Sine and Cosine rules

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DanMad asked Apr 20, 2022

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Please help. Sine and Cosine rules

Mathematics
high-school

DanMad asked Apr 20, 2022

by DanMad

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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

ICantC answered Apr 27, 2022

by ICantC

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