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 theta question

  1. Apr 17, 2010 #1
    1. The problem statement, all variables and given/known data

    I dont understand the step the math book took to convert sin(theta)/sin(theta)-cos(theta) to 1/sin(theta)-cos(theta)/sin(theta)

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Apr 17, 2010 #2
    It just divided the whole expression by sin(theta).

    sin(theta)/sin(theta) - cos(theta) = 1 - cos(theta). Divide that by sin(theta) and you get 1/sin(theta) - cos(theta)/sin(theta).

    But in general 1 - cos(theta) does not equal 1/sin(theta) - cos(theta)/sin(theta).
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Trig theta question
  1. Trig theta Question (Replies: 1)

  2. Theta question (Replies: 3)

  3. Sin theta question (Replies: 5)