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Homework Help: I need help in trigonometry :S

  1. Oct 14, 2008 #1
    i got to find the sin and cos of cylinder. in the cylinder system plz help me
     
  2. jcsd
  3. Oct 14, 2008 #2
    your question is not clear jerina.
     
  4. Oct 14, 2008 #3
    i got to find the Cylindrical coordinates :s sorry
     
  5. Oct 14, 2008 #4
    I'm sorry,I think it deals with higher mathematical trigonometry.I know few about sin & cos but like sinx & cosx and there calculation like how to find the reasonable range of x ;in sinx+cosx=sin2x
     
  6. Oct 14, 2008 #5

    Mark44

    Staff: Mentor

    I'm guessing that you need to find the cylindrical coordinates for a cylinder, but you haven't told us anything about the cylinder you're working with. A point in cylindrical coordinates is an ordered triple of numbers, (r, [tex]\vartheta[/tex], z).

    For a vertical cylinder of radius a whose center axis lies along the z-axis, the equation is very simple: r = a. Every point (r, [tex]\vartheta[/tex], z) on this cylinder will have an r value of a.
     
  7. Oct 14, 2008 #6
    http://faculty.eicc.edu/bwood/ma220supplemental/sup7fig1.gif [Broken] like that or that http://einstein1.byu.edu/~masong/emsite/S1Q80/vectorgeometry.gif
     
    Last edited by a moderator: May 3, 2017
  8. Oct 14, 2008 #7

    Mark44

    Staff: Mentor

    [/URL]
    Like the first one. The second one shows spherical coordinates.
     
    Last edited by a moderator: May 3, 2017
  9. Oct 14, 2008 #8
    you should show some sincere work before you ask anyone for help.
     
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