anonymous
  • anonymous
simplify cos^2 Ө / 1 - sin Ө
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
cos^2 = 1 - sin^2
anonymous
  • anonymous
none of my answer choices have cos in them
anonymous
  • anonymous
no, replace cos^2 with 1 - sin^2. Then simplify

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anonymous
  • anonymous
it's like @10115658 explained use Cos^2θ =1-Sin^2θ
anonymous
  • anonymous
there isn't an " ^2 " option either
anonymous
  • anonymous
these are the answer choices: sin Ө 1 + sin Ө 1 - sin Ө 1 - sin Ө / sin Ө
anonymous
  • anonymous
\[\cos(\Theta)^2 = 1 - \sin(\Theta)^2 = (1-\sin(\Theta))(1+\sin(\Theta))\] then : \[\frac{ \cos(\Theta )^2}{ 1-\sin(\Theta) } = \frac{ (1-\sin(\Theta)(1+\sin(\Theta)) }{ 1-\sin(\Theta) } = ?\] Let me know if you got it :)
anonymous
  • anonymous
What should cancel?
anonymous
  • anonymous
the 1 - sin
anonymous
  • anonymous
leaving what
anonymous
  • anonymous
1 + sin Ө
anonymous
  • anonymous
So what's the answer
anonymous
  • anonymous
1 + sin Ө
anonymous
  • anonymous
correct A
anonymous
  • anonymous
:D
anonymous
  • anonymous
great explanation @Omar_Elboredy
anonymous
  • anonymous
thanks guys :)
anonymous
  • anonymous

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