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OpenStudy (anonymous):
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?
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OpenStudy (anonymous):
@welshfella Could you help this person?
OpenStudy (anonymous):
@blurbendy @iambatman I dont know this one and dont want to leave with it unanswered.
OpenStudy (anonymous):
Thanks! ANy help is VERY much appreciated. I'll post a pic of what I think im dealing with
OpenStudy (anonymous):
|dw:1429292042421:dw|
OpenStudy (welshfella):
use trigonometry tan 32 = 40 / x where x is the width of the river rearranging x = 40 / tan 32
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