Helpjebal
  • Helpjebal
In this equation they solved, i was wondering why they were able to take away sin x from the numerator (1st and 2nd step)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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Helpjebal
  • Helpjebal
Helpjebal
  • Helpjebal
by doing so, the denominator is now sin^2 x, why is that?
mathmale
  • mathmale
First, the numerator was factored. sin x was a factor of each of the two terms there, and was factored out. Second, since \[\sin^2x+\cos^2x=1, \]

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mathmale
  • mathmale
\[1-\cos^2x =\sin^2x. \]
mathmale
  • mathmale
Trig identity. If this problem is still not clear to you, please ask further questions.
Helpjebal
  • Helpjebal
Ohhh, okay I understand now. Took me a while to fully understand what you meant, hence the long time to respond. Thank you!

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