A 40-ft tower is located on the edge of a river. The angle of elevation between the opposite bank and the top of the tower is 32°. How wide is the river?

Question

anonymous · Answer

@welshfella Could you help this person?

anonymous · Answer

@blurbendy @iambatman I dont know this one and dont want to leave with it unanswered.

anonymous · Answer

Thanks! ANy help is VERY much appreciated. I'll post a pic of what I think im dealing with

anonymous · Answer

|dw:1429292042421:dw|

welshfella · Answer

use trigonometry
tan 32 = 40 / x

where x is the width of the river

rearranging
x = 40 /  tan 32