Question

Find the missing side a if Angle B =39 and side b=6Round your answer to the nearest hundredth if necessary.

Answer 1

The triangle ABC is right angle triangle.

Determine the side a by using trigonometry.

$\begin{gathered} \tan B=\frac{b}{a} \\ \tan 39=\frac{6}{a} \\ a\approx\frac{6}{0.81} \\ \approx7.41 \end{gathered}$

So length of missing side a is 7.41.