jazztyler17
jazztyler17 jazztyler17
  • 13-02-2017
  • Mathematics
contestada

Find the length of BC Round to the nearest hundredth.

A.
0.02 m
B.
6.04 m
C.
8.12 m
D.
51.00 m

Find the length of BC Round to the nearest hundredth A 002 m B 604 m C 812 m D 5100 m class=

Respuesta :

sammyherrera28 sammyherrera28
  • 03-05-2018
The answer is B i just did it and teacher helped me
Answer Link
InesWalston
InesWalston InesWalston
  • 24-12-2018

Answer:

[tex]a=6\ m[/tex]

Step-by-step explanation:

Here,

[tex]m\angle A=18^{\circ}\\\\m\angle C=21^{\circ}\\\\AB=c=7\ m\\\\BC=a=??[/tex]

Sine law-

[tex]\dfrac{\sin A}{a}=\dfrac{\sin B}{b}=\dfrac{\sin C}{c}[/tex]

Putting the values,

[tex]\Rightarrow \dfrac{\sin 18}{a}=\dfrac{\sin 21}{7}[/tex]

[tex]\Rightarrow a=\dfrac{\sin 18\times 7}{\sin 21}[/tex]

[tex]\Rightarrow a=6\ m[/tex]

Answer Link

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