anonymous
  • anonymous
find the domain of validity for each identity sin0(imagine the 0s has a line through it)+cos0/sin 0=1+cos0 Please explain I am totally lost on this I know that it is true but i don't know anything else is that all I need to know I am really confused please help!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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LunyMoony
  • LunyMoony
I have no idea, sorry. Where's a math/trigonometry genius when you need them!
anonymous
  • anonymous
I am really confused on this
LunyMoony
  • LunyMoony
I did these once, but I sucked at them and I have no idea how I got through them

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Loser66
  • Loser66
\(sin(\theta)+\dfrac{cos(\theta)}{sin(\theta)}= 1+ cos (\theta)\), right?
Loser66
  • Loser66
and we have to prove it, right?
anonymous
  • anonymous
yep
Loser66
  • Loser66
It is not identity, how to prove?? counterexample, \(\theta = \pi/6\)
Loser66
  • Loser66
Left hand side: \(1/2+ \sqrt3=\dfrac{1+2\sqrt3}{2}\) Righ hand side :\(1+\sqrt3/2 =\dfrac{2+\sqrt3}{2}\)
Loser66
  • Loser66
Hence \(LHS\neq RHS\)
anonymous
  • anonymous
i am going to make a guess `
anonymous
  • anonymous
no, i am not
anonymous
  • anonymous
but i am almost certain there is a typo in the question

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