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September 11th, 2013, 07:39 PM   #1
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Simplify Cos

simplify

so;

=



So how would I write the answer? I know that but is that the actually answer? It didn't ask me for cos of anything. It just said simplify.

And will the changing to trick I used work?

Thanks in advance for all of your help. I've gotten so much better at Math thanks to this forum.
Sham
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September 12th, 2013, 04:55 AM   #2
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Re: Simplify Cos

What do you think "simplify" means? It you have a complicated expression that turns out to be equal to a single number, then that number is as "simple" as you are going to get!
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September 12th, 2013, 06:05 AM   #3
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Re: Simplify Cos

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