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Math Help - North, East, South, West airplane thingy

  1. #1
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    North, East, South, West airplane thingy

    Hi, thank you (again?) for taking the time to look at my problem.

    A helicopter makes a forced landing at sea. The last radio signal received at station C gives the bearing of the helicopter from C as N 57.1degrees E at an altitude of 423 feet. An observer at C sights the helicopter and gives <DCB as 12.1 degrees. How far will a rescue boat at A have to travel to reach any survivors at B? Apply the rules regarding the use of sgnificant digits when determining your answer.

    I redid the figure on paint. The helicopter pictures are at D and B.

    How should I do this?
    Attached Thumbnails Attached Thumbnails North, East, South, West airplane thingy-14b.jpg  
    Last edited by Minty; September 20th 2009 at 08:41 PM.
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  2. #2
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    Quote Originally Posted by Minty View Post
    Hi, thank you (again?) for taking the time to look at my problem.

    A helicopter makes a forced landing at sea. The last radio signal received at station C gives the bearing of the helicopter from C as N 57.1degrees E at an altitude of 423 feet. An observer at C sights the helicopter and gives <DCB as 12.1 degrees. How far will a rescue boat at A have to travel to reach any survivors at B? Apply the rules regarding the use of sgnificant digits when determining your answer.

    I redid the figure on paint. The helicopter pictures are at D and B.

    How should I do this?
    where is A ?
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  3. #3
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    Oops, sorry, fixed

    Edit: It's rather tiny but it's still visible. x3;
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  4. #4
    Super Member Matt Westwood's Avatar
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    First thing to do is find CB. You can do this by using tangent, as you have the height of where the chopper is, and the angle has also been given. Then you can find CA by trig again: B is the hypotenuse, and angle ACB you've been given.

    Fine diagram, by the way - good job.
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  5. #5
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    Ohh I see
    Thank you very much <3
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