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How to use trigonometry on calculator

  1. Sep 9, 2012 #1
    I know this is a pretty basic question, but it's holding me back from doing my homework due tonight. How do I use trig functions on my calculator. For example and problem in my book says:
    (483 N) cos (44) = 347 N
    When I plug it in my calculator like so:
    (483)cos(44) =
    I get: 482.9243181

    What am I doing wrong??
    Thank you SO much!!!
  2. jcsd
  3. Sep 9, 2012 #2
    Your calculator is finding the cosine of 44 radians; You want to find the cosine of 44 degrees. If you have a T.I. 85 or 86, here's how to change the calculator from degrees to radian mode:

    Press MODE.
    The third option changes the angle mode between degrees and radians. Set this to degrees.
  4. Sep 9, 2012 #3
    Thank you very much!!!!
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