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Mathematics 7 Online
OpenStudy (anonymous):

pls help trignometry question

OpenStudy (anonymous):

OpenStudy (unklerhaukus):

which one?

OpenStudy (anonymous):

all of them @UnkleRhaukus just want to check if the answer is right or not

sam (.sam.):

A and D are correct

sam (.sam.):

\[ \lim_{x\to \pi ^-}( \cot x) =-\infty \]

OpenStudy (anonymous):

my bad thought it was tanx not cotx

sam (.sam.):

For D

sam (.sam.):

All good except E

OpenStudy (anonymous):

@.Sam. SO A and D are right what about b and c and e

sam (.sam.):

\[ \lim_{x\to \left(\frac{\pi }{2}\right)^+} ( \tan x) =-\infty\]

sam (.sam.):

OpenStudy (anonymous):

So @.Sam. which all have i done right

sam (.sam.):

All good except for E

OpenStudy (anonymous):

So how do we have to do e

OpenStudy (unklerhaukus):

@u0860867 i think you found \[\lim_{x\to\pi/2^-}\tan x=\infty\] but the question is \[\lim_{x\to\pi/2^+}\tan x\]

OpenStudy (anonymous):

E asks is the limit approaching from the right of pi/2

sam (.sam.):

Yeah exactly unkle, we got the vertical asymptote at 3pi/2, So as x approaches pi/2, with asymptote at 3pi/2 you will get -infinity because its at the left side of the asymtotes

sam (.sam.):

Picture

OpenStudy (anonymous):

so i just ned to put a negative sign infront of my answer

sam (.sam.):

Yes

OpenStudy (anonymous):

thanks @.Sam. and @UnkleRhaukus , @Euler271

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