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Angular Geometry Issue

brian_roberts931brian_roberts931 Member Posts: 2
If I a draw a Triangle 100mm high with an 11deg internal angle then Onshape calculates the base as 19.4mm  - however if i use trigonometry to determine the base =sin(11)*100 the length is 19.1 (to on decimal place)

I appreciate 0.3mm isnt  lot however this means points on my sketch cant coincide.
What am i doing wrong?

Best Answer

  • bruce_williamsbruce_williams Member, Developers Posts: 842 PRO
    edited September 2021 Answer ✓
    @brian_roberts931

    Welcome to the forum.  You should be using Tan for your formula not Sine.  Onshape is correct.
    www.accuratepattern.com

Answers

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