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#1 2008-04-09 06:36:01
- parallax
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- Registered: 2008-04-09
- Posts: 1
Prove the Trig Identity
Prove the trig identity:
I must be doing something wrong because I end up with cos(4x)=1? x.x I know I'm getting lost, please help if you have a moment. 
Last edited by parallax (2008-04-09 06:36:53)
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#2 2008-04-09 06:43:04
- Daniel123
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- Registered: 2007-05-23
- Posts: 663
Re: Prove the Trig Identity
The best way to approach these is to pick the side of the equation that is the most complicated, and simplify it to look like the other side.
Last edited by Daniel123 (2008-04-09 06:45:51)
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#3 2008-04-09 06:54:27
- parallax
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- Registered: 2008-04-09
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Re: Prove the Trig Identity
Thanks, that seems a lot easier now.. it looked daunting at first. I appreciate the help.
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