Question

A truck moving north at a speed of 70 km/h. The exhaust pipe on top sends out a trail of smoke that makes a 20 degree angle east of south. If the wind is blowing toward the east. What is the wind speed at that location?

Answer 1

tan 20 =v/70

Answer 2

Mhmm

Answer 3

There should be a diagram to support it

Answer 4

I need the working