Question

which trig ratio will be helpful in finding the missing side length?

Answer 1

Since we know the hypotenuse and we need to calculate the opposite side we need to use the sine function since:

$\begin{gathered} sin(\theta)=\frac{opposite}{_{\text{ }}hypotenuse} \\ so: \\ sin(21)=\frac{x}{22} \end{gathered}$

Answer:

sin(21)