2)
[tex]\sin \theta\text{ = }\frac{-2}{5}[/tex]
We know that,
[tex]\begin{gathered} sin\text{ }\theta=\frac{-2}{5}\text{ } \\ \theta\text{ = }\sin ^{-1}\frac{-2}{5} \\ \theta\text{ = -23.57} \end{gathered}[/tex]
Other values of theta: 203.57 ,
The angle is less than zero, hence the triangle is in the second or fourth quadrant.
