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Math Help - How to find the shortest crease?

  1. #1
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    How to find the shortest crease?

    A very long rectangular piece of paper is 20 cm wide. The bottom right-hand corner is folded along the crease, so that the corner just touches the left-hand side of the page. How should this be done so that the crease is as short as possible?

    I should solve it by using a trig function. Thank you!

    An example of the figure is the second on this image:

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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by hasanbalkan View Post
    A very long rectangular piece of paper is 20 cm wide. The bottom right-hand corner is folded along the crease, so that the corner just touches the left-hand side of the page. How should this be done so that the crease is as short as possible?

    I should solve it by using a trig function. Thank you!

    An example of the figure is the second on this image:

    a very similar question was dealt with here. it may help you
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  3. #3
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    Thank you for pointing it out. I managed to solve the problem. Great forum.
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