Results 1 to 1 of 1

Math Help - complex

  1. #1
    Junior Member
    Joined
    Aug 2009
    Posts
    62

    complex

    Hi everybody,

    I don't know how to find S=\sum_{k=0}^n cos(k \alpha) without using complex. Can you help me please find an alternative way of doing it?

    And thanks.
    Last edited by mr fantastic; October 3rd 2010 at 11:36 AM. Reason: Clarity.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 3
    Last Post: October 4th 2011, 05:30 AM
  2. Replies: 6
    Last Post: September 13th 2011, 07:16 AM
  3. Replies: 1
    Last Post: October 2nd 2010, 01:54 PM
  4. Replies: 12
    Last Post: June 2nd 2010, 02:30 PM
  5. Replies: 1
    Last Post: March 3rd 2008, 07:17 AM

Search Tags


/mathhelpforum @mathhelpforum