Please help solve fully with picture

Question

A stop sign is 10 feet tall, and is casting a shadow downhill on a road that has an angle of elevation of 16˚. If the angle of elevation of the sun is 48˚, ho w long is the stop sign’s shadow to the nearest tenth of a foot?

Answer 1

After drawing it up I found you want side b.

Side a=10".

b=?

c=?

Angle α=36°

β=48°

γ=106°

a/sinα=b/sinβ=c/sinγ

10/.587...=17.013=b/.743...

b=12.643...