The Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Math Forum » Discussions » Inactive » k12.ed.math

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: Trigonometry - Proving trigonometric identities
Replies: 9   Last Post: Dec 21, 2004 12:09 AM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]

Posts: 31
Registered: 12/6/04
Trigonometry - Proving trigonometric identities
Posted: Nov 16, 2004 5:29 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

If I have a question:


tan x cos x
---------- + -------------
1 - tan x sin x - cos x

If I am required to simplify and not prove as I don't know the answer
to this equation, is there a standard way to commence simplifying the
equation and is there a difined time to stop? Each part of the
equation, tan x, cos x, 1 - tan x all can be changed which ones do you
change and when do you stop. You can continually change and rearrange
and then change again your new answer. I have trouble knowing where to
stop if I don't have a defined identity to prove.

Hopefully you will be able to understand what I mean!

Thank you


submissions: post to k12.ed.math or e-mail to
private e-mail to the k12.ed.math moderator:
newsgroup website: <a href=""></a>
newsgroup charter: <a href=""></a>

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2018. All Rights Reserved.