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B What do Sine, Cosine and Tangent do?

  1. Oct 19, 2016 #1
    When I press these buttons on my calculator to find the third side or an angle in a triangle, what calculation is happening? What is the logic behind it all?
    I know it's a very basic question, but I am only in grade 10 and have not started Math yet this year.
     
  2. jcsd
  3. Oct 19, 2016 #2

    Mark44

    Staff: Mentor

  4. Oct 19, 2016 #3

    fresh_42

    Staff: Mentor

    Inside the calculator there is probably an algorithm going on, that numerically approximates the questioned values.
    One could e.g. use the formulas described on this Wikipedia page:
    https://en.wikipedia.org/wiki/Sine#Series_definition
    It contains a section about algorithms and further links, too.
     
  5. Oct 19, 2016 #4
    Thanks, should have thought to check the wiki page myself! :DD
     
  6. Oct 19, 2016 #5

    Mark44

    Staff: Mentor

    See CORDIC, an algorithm that is in widespread use in calculators.
     
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