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Mathematics 16 Online
OpenStudy (anonymous):

??

OpenStudy (anonymous):

OpenStudy (mertsj):

We can find angle C using the fact that the sum of the angles is 180. So do that first.

OpenStudy (mertsj):

hello???

OpenStudy (anonymous):

48

OpenStudy (mertsj):

What is 58 plus 82?

OpenStudy (anonymous):

140. So c is 40.

OpenStudy (mertsj):

Now use the law of sines to find a

OpenStudy (anonymous):

I dont understand what numbers to put in where. I know the law of sines is sin a/a= sin b/b= sin c/c

OpenStudy (mertsj):

\[\frac{\sin 40}{8.4}=\frac{\sin 58}{a}\]

OpenStudy (mertsj):

\[\frac{\sin 40}{8.4}=\frac{\sin 82}{b}\]

OpenStudy (anonymous):

How can sin40/8.4 = both of those?

OpenStudy (mertsj):

Because the law of sines says so.

OpenStudy (anonymous):

Okay. I get it.sin40/8.4 is .076

OpenStudy (mertsj):

Do you know how to solve a proportion?

OpenStudy (anonymous):

No. Im trying to understand it all. But its really hard for me.

OpenStudy (mertsj):

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