anonymous
  • anonymous
Two boats start their journey from the same point A and travel along directions AC and AD, as shown below.What is the distance, CD, between the boats? 115.5 ft 213.2 ft 230.9 ft 346.4 ft
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
anonymous
  • anonymous
tan(30) = BD/300 tan(60) = BC/300 BD-BC = CD
phi
  • phi
Are you studying trig? if so, sheena's answer is a good way. If you are studying special 30-60-90 triangles, then notice that triangle ABD is one of them. So you should be able to find leg AD: it is sqrt(3)*legAB Triangle ABC is also a 30-60-90 triangle, so you should be able to find leg BC. BC is AB/sqrt(3) Now you can find the distance between C and D. BD-BC

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More answers

anonymous
  • anonymous
@iambatman @IMStuck can you help me find the answer to this please
IMStuck
  • IMStuck
I can help you. Let me draw it out to show you step by step, ok?
anonymous
  • anonymous
yes please :)
IMStuck
  • IMStuck
|dw:1406486912705:dw|Find x first. Do this by using the cos of 60 degrees. Like this:
anonymous
  • anonymous
yes...
anonymous
  • anonymous
im understanding so far
IMStuck
  • IMStuck
tangent is the side opposite over the side adjacent so we will use the 600 + whatever the other distance is and find the whole distance BD by solving for y now.
anonymous
  • anonymous
im trying to process this one second
anonymous
  • anonymous
ok how do we solve for y
IMStuck
  • IMStuck
So the length of BD is the value for x + the value for y: 600 + (-80.3848)=> 600-80.3848=519.6152
anonymous
  • anonymous
yes but that is not one of the answer choices
anonymous
  • anonymous
@IMStuck
IMStuck
  • IMStuck
Oh boy then I have to redo. Hold on...sorry.
IMStuck
  • IMStuck
Duh...that's cuz I used cos in the first step and I should have used tangent! My fault!!! Redo! I'm going to delete the drawings and start over. So dumb...
anonymous
  • anonymous
no you are not dumb lol
IMStuck
  • IMStuck
|dw:1406487675225:dw|
IMStuck
  • IMStuck
|dw:1406487718098:dw|
IMStuck
  • IMStuck
NOW let's do this right!
anonymous
  • anonymous
yes!!
IMStuck
  • IMStuck
|dw:1406487793950:dw|
IMStuck
  • IMStuck
|dw:1406487859409:dw|
IMStuck
  • IMStuck
|dw:1406487929885:dw|
anonymous
  • anonymous
yay!!! you got it! thank you i understand now!
IMStuck
  • IMStuck
Very cool!
IMStuck
  • IMStuck
TY for the medal!
anonymous
  • anonymous
no problem :)
Godlovesme
  • Godlovesme
thanks guys :D <3

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