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Help

Former MemberFormer Member Posts: 1,876,324 The Mix Honorary Guru
Ok, for those people among you who are vaguely geekish when it comes to maths - I'm kinda in need of some help.

With exact values for sine, cosine and tan i have issues. I can understand the ones that are within the four quadrants, but I get stuck when it comes to 90, 180, 270 and 360 degrees. How dyou know whether they are positive or negative? And how do you know if they are 1 or 0?

I know that for 90 degrees, sin = 1 and cos = 0, and tan is undefined. But how do you work out the other ones?

*is confused*

Comments

  • Former MemberFormer Member Posts: 1,876,324 The Mix Honorary Guru
    Sheep are wooly.
  • Former MemberFormer Member Posts: 1,876,324 The Mix Honorary Guru
    The hypodyslexic transmogrifier has obviously defunked and run away..... in the wise words of Manuel the waiter.... Que?
  • Former MemberFormer Member Posts: 1,876,324 The Mix Honorary Guru
    drawing the graphs out might help, sorry but I can't really remember the exact ones
  • Former MemberFormer Member Posts: 1,876,324 The Mix Honorary Guru
    Originally posted by rushin
    drawing the graphs out might help, sorry but I can't really remember the exact ones

    Ooo, that's rather a good idea...
  • Former MemberFormer Member Posts: 1,876,324 The Mix Honorary Guru
    Yups, got them now :)

    Gotta love my graphics calculator that draws ace graphs :D:D
  • Former MemberFormer Member Posts: 1,876,324 The Mix Honorary Guru
    glad you got your head around it:)
    lucky you having a calculator to do the graphs for you when I was at school I had to draw them all out by hand!
  • Former MemberFormer Member Posts: 1,876,324 The Mix Honorary Guru
    Yay for calculators that do graphs and funky lamps.
    Wahoo! :crazyeyes
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