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!
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OpenStudy (lunymoony):
I have no idea, sorry. Where's a math/trigonometry genius when you need them!
OpenStudy (anonymous):
I am really confused on this
OpenStudy (lunymoony):
I did these once, but I sucked at them and I have no idea how I got through them
OpenStudy (loser66):
\(sin(\theta)+\dfrac{cos(\theta)}{sin(\theta)}= 1+ cos (\theta)\), right?
OpenStudy (loser66):
and we have to prove it, right?
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OpenStudy (anonymous):
yep
OpenStudy (loser66):
It is not identity, how to prove??
counterexample, \(\theta = \pi/6\)
OpenStudy (loser66):
Left hand side: \(1/2+ \sqrt3=\dfrac{1+2\sqrt3}{2}\)
Righ hand side :\(1+\sqrt3/2 =\dfrac{2+\sqrt3}{2}\)
OpenStudy (loser66):
Hence \(LHS\neq RHS\)
OpenStudy (anonymous):
i am going to make a guess
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OpenStudy (anonymous):
no, i am not
OpenStudy (anonymous):
but i am almost certain there is a typo in the question