freddiemarchant
freddiemarchant freddiemarchant
  • 13-09-2021
  • Mathematics
contestada

Please help. Sine and Cosine rules

Please help Sine and Cosine rules class=

Respuesta :

umairwaheed8888776
umairwaheed8888776 umairwaheed8888776
  • 13-09-2021

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=[tex]\sqrt8.019237886\\[/tex]

BC=2.83

2.8

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