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mathkid February 24th, 2013 07:37 PM

trick question
 
_____ -8sin^2(x) = 8cos^2(x)


:mrgreen:

MarkFL February 24th, 2013 07:40 PM

Re: trick question
 
Hint:

Now multiply through by 8.

soroban February 24th, 2013 08:04 PM

Re: trick question
 
Hello, mathkid!

A strange way to write the problem . . .


Quote:





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mathkid February 25th, 2013 03:51 AM

Re: trick question
 
ok yes I know the sin squared + cos squared = 1 solving algebraically for the missing variable or blank was so simple seeing it now. I just need to practice the trig more. makes me want to puke sometimes...lol


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