If there is no wind blowing, rain falls vertically at 9 metres per second.
The wind blowing makes the rain come down at an angle.
Joe and Kerry measure the angle of the falling rain at the same time. To Joe, the rain appears to be falling towards the east at an angle of 51 degrees to the vertical. To Kerry, the rain appears to be falling towards the south at an angle of 32 degrees to the vertical.
Find the speed of the wind.
How do you get started with this question?
Replied to MT3