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Thread: Need help finding the right formula

  1. #1

    Need help finding the right formula

    So im not very good at geometry and I need to find a formula to find the angles that can be seen in the picture.
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  2. #2
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    Quote Originally Posted by cod8smith View Post
    So im not very good at geometry and I need to find a formula to find the angles that can be seen in the picture.


    Calculate the lengths of the sides a, b & c. Then use laws of cosines and sines to calculate the angles
    “... mathematics is only the art of saying the same thing in different words” - B. Russell

  3. #3
    well its for a program I am working on that calculates stl files. They contain these coordinates and I would like a formula so the output would be the requested angles. But long formulas confuse me :/

    Under here is a picture I made saying the formulas that will gather the data by using the length of the sides (instead of the coordinates) can you put this into a single formula (for alpha 1/2 beta and gamma) so I can implement this in the code, using the coordinates xyz as a the only given value for the triangle?

    It might be simple, but i'm not great at maths
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    Last edited by cod8smith; 03-01-2017 at 10:43 AM.

  4. #4
    What you are asking me to do is what I already did in the picture above, however the sides are not given, the coordinates are. I need a sum-up of the total formula to implement in the code for the program.
    Last edited by cod8smith; 03-01-2017 at 10:59 AM.

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