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Math Help - 3d trig help please?

  1. #1
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    3d trig help please?

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  2. #2
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    Quote Originally Posted by anonymous_maths View Post
    http://www.mathhelpforum.com/math-he...manageattach&p=


    angle CAE is 45deg
    angle gAf' is 45deg
    angle gfA is 22.5deg

    ANGLE ifh = angle 90 deg minus angle gfA.
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