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Thanks in advance

 Jun 23, 2016

Best Answer 

 #2
avatar+9664 
+5

\(\color{red}\frac{13}{sin120}=\frac{7}{sinC}\)

\(\color{lime}13sinC=7sin120\)

\(\color{blue}sinC=\frac{7sin120}{13}\)

\(\color{purple}C= asin (\frac{7sin120}{13})\)

It doesn't look like a rainbow in this color pattern...... Never mind. C approximately equals 27.79 degrees.

 Jun 23, 2016
 #1
avatar+118613 
+5

Use the sine rule

 Jun 23, 2016
 #2
avatar+9664 
+5
Best Answer

\(\color{red}\frac{13}{sin120}=\frac{7}{sinC}\)

\(\color{lime}13sinC=7sin120\)

\(\color{blue}sinC=\frac{7sin120}{13}\)

\(\color{purple}C= asin (\frac{7sin120}{13})\)

It doesn't look like a rainbow in this color pattern...... Never mind. C approximately equals 27.79 degrees.

MaxWong Jun 23, 2016

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