1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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


    Staff: Mentor

  4. Oct 19, 2016 #3


    User Avatar
    2017 Award

    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:
    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


    Staff: Mentor

    See CORDIC, an algorithm that is in widespread use in calculators.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted

Similar Discussions: What do Sine, Cosine and Tangent do?
  1. Sine and cosine (Replies: 4)

  2. Sine and cosine (Replies: 5)