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Mathematics 18 Online
OpenStudy (anonymous):

A person is watching a boat from the top of a lighthouse. The boat is approaching the lighthouse directly. When first noticed the angle of depression to the boat is 14°52'. When the boat stops, the angle of depression is 45°10'. The lighthouse is 200 feet tall. How far did the boat travel from when it was first noticed until it stopped? Round your answer to the hundredths place.

OpenStudy (anonymous):

could you help with one more ? @CliffSedge ?

OpenStudy (anonymous):

I found this solution on a forum: x1= 200cot(theta 1) x2= 200cot(theta 2) Therefore; x1-x2 = 200((cot(theta1)-(cottheta2)) Link: http://www.mymathforum.com/viewtopic.php?f=13&t=34219

OpenStudy (anonymous):

@Boblovesmath @ienarancillo whick one should i go with ? you both have very different answers

OpenStudy (anonymous):

???

OpenStudy (anonymous):

sorry. wait a sec

OpenStudy (anonymous):

okay @ienarancillo

OpenStudy (anonymous):

i think u shud follow @Boblovesmath 's answer. :)

OpenStudy (anonymous):

Oh alright thank you for your help anyways :)

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