SOLUTION
The diagram shows a scalene triangle with the following given angles given
[tex]\begin{gathered} 99^0 \\ 56^0 \\ x^0 \end{gathered}[/tex]
Using the theorem, the sum of angles in a triangle is 180 degrees
Then we have
[tex]\begin{gathered} 99^0+56^0+x^0=180^0 \\ 155^0+x^0=180^0 \end{gathered}[/tex]
Then
[tex]\begin{gathered} x^0=180^0-155^0 \\ x=25^0 \end{gathered}[/tex]
Hence, the value of x is 25°
