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!

Trig question eq in the form y = sin k x

  1. Oct 28, 2009 #1
    1. The problem statement, all variables and given/known data

    http://img62.imageshack.us/img62/7677/30639229.jpg [Broken]

    2. Relevant equations

    y = sin k x

    3. The attempt at a solution

    Looking for help with part 12b in particular so i can try 13c

    Im not quite sure how the coefficent of x (K) in the function y=sin kx relate to peroid and frequency. I know that if k is less then 1 the graph is stretched horizontally and if k > 1 its compressed horizontally but i cant come up with the equation.
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Oct 28, 2009 #2


    User Avatar
    Homework Helper

    Periodic functions follow the form




    ω is the angular frequency. (In your question, A=1)
  4. Oct 28, 2009 #3
    i got it the formula i could not recall was that period = 2Pi / K (constant in my question)
    thanks for your help sir!
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Trig question form Date
Trig question Oct 17, 2016
Basic Trig Problem Jun 11, 2016
Quick Trigonometric Identity Question May 8, 2016
Trig Form Conversion question May 20, 2008
Trig Form Question May 20, 2008