1. Not finding help here? Sign up for a free 30min 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!

Core 3 level help

  1. Nov 2, 2007 #1

    Could someone please explain to me the following C3 level trigonometry question? I would really appreciate any help as I am completely stuck at the moment.

    Express tan2x/(1 - ((tan^2)2x)) in a more simple form.

    The answer in the back of the textbook is (1/2)tan4x.

    Thank you.

  2. jcsd
  3. Nov 2, 2007 #2


    User Avatar
    Homework Helper

    remember that [tex]tan2A=\frac{2tanA}{1-tan^2A}[/tex]

    does what you have look similar to that form?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Core 3 level help
  1. Core 3 help (Replies: 7)

  2. Core 3 help (Replies: 5)

  3. Core 3 level help (Replies: 12)

  4. Core 3 Compound Angles (Replies: 5)