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Math Help - unsure about the term

  1. #1
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    unsure about the term

    So i was trying to solve a problem as listed as below.

    From a boat on the lake, the angle of elevation to the top of a cliff is 2938ʹ. If the base of the cliff is
    655 feet from the boat, how high is the cliff (to the nearest foot)?

    I am unsure how to approach this problem because i dont get what
    2938ʹ is!

    is it trying to tell me that it is 29 degree and 38 ft??



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  2. #2
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    Re: unsure about the term

    No, it's 29 degrees and 38 minutes. A minute is 1/60 of a degree.
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  3. #3
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    Re: unsure about the term

    so,, would it mean 29 and 38/60 degree?? how do i solve that? please help me! i am very confused
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  4. #4
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    Re: unsure about the term

    Draw a diagram. Use trig.
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  5. #5
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    Re: unsure about the term

    Quote Originally Posted by Calcgirl View Post
    so,, would it mean 29 and 38/60 degree?? how do i solve that? please help me! i am very confused
    ... use the 29^\circ 38' = \left(29 + \frac{38}{60} \right)^\circ and your calculator to solve for the height (opposite side of this angle) in the right triangle problem.
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  6. #6
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    Re: unsure about the term

    oh thanks! Now i can solve it!
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  7. #7
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    Re: unsure about the term

    I could not do that and that is why i posted here
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  8. #8
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    Re: unsure about the term

    Quote Originally Posted by Prove It View Post
    A minute is 1/60 of a degree.
    Fun fact: Minute means "minute." "Second" means second minute part of an hour (or degree), so "minute" is, in fact, first minute part of an hour.
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  9. #9
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    Re: unsure about the term

    Quote Originally Posted by Calcgirl View Post
    I could not do that and that is why i posted here
    could not do what? be specific.
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  10. #10
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    Re: unsure about the term

    Just get its value of 38 min from the tan table.
    tan A=P/B
    here p=perpendicular
    b=base
    so tan(29 degree and 38 min)=P/655
    In this question we can easily find out the value of tan29 but got 38 we have to check its value from table
    Last edited by skeeter; August 3rd 2012 at 09:07 AM. Reason: removed commercial link
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