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anonymous
 one year ago
find limx→π+ csc(2x)
is it positive or a negative limit?
anonymous
 one year ago
find limx→π+ csc(2x) is it positive or a negative limit?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[\lim_{x \rightarrow \pi} \csc(2x)\] written like this ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0now you know the relationship between csc and sin ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yeah reciprocals right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0it's called inverse actually : csc(x)=1/sin(x)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0now csc(2x)=1/sin(2x)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0now sin(2x)=sin(x+x) which is....

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you have a formula for this

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0sin(a+b)=sin(a)cos(b)+sin(b)cos(a)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0use the formula mate

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0replace x with a and x with b and add that sum

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0your limit can be written in this form \[\lim_{x \rightarrow \pi}\frac{ 1 }{ 2\sin x \cos x }\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0now replace x with pi and do the math...
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