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Math Help - I need help finding this Chord length

  1. #1
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    I need help finding this Chord length

    Can someone help me figure out the formula for solving Chord DE (see attachment)?

    The two formulas I have been trying up till now (with two different results) are...

    .50*sin(15+acos((.5-2*.02)/.5) = .3083

    or

    .50*sin(15+acos((.5-.02)/.5) = .2594


    any help will be appreciated. Also, this angle of 15 may need to be changed up/down a bit depending on the situation I encounter, will that be an issue once we find the correct formula?
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  2. #2
    Forum Admin topsquark's Avatar
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    Re: I need help finding this Chord length

    Quote Originally Posted by tiehen View Post
    Can someone help me figure out the formula for solving Chord DE (see attachment)?

    The two formulas I have been trying up till now (with two different results) are...

    .50*sin(15+acos((.5-2*.02)/.5) = .3083

    or

    .50*sin(15+acos((.5-.02)/.5) = .2594


    any help will be appreciated. Also, this angle of 15 may need to be changed up/down a bit depending on the situation I encounter, will that be an issue once we find the correct formula?
    tiehen please check the attached file. It may be nothing, but my computer is sending up a red flag when I try to open it.

    -Dan
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  3. #3
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    Re: I need help finding this Chord length

    Dan......I'm not sure what to check it's just a pdf that opens up just fine on my computer. When you say "red flag" what does that exactly mean?
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  4. #4
    Forum Admin topsquark's Avatar
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    Re: I need help finding this Chord length

    Quote Originally Posted by tiehen View Post
    Dan......I'm not sure what to check it's just a pdf that opens up just fine on my computer. When you say "red flag" what does that exactly mean?
    Apparently nothing. It's working fine today. Sorry about the mixup.

    -Dan
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