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OpenStudy (anonymous):
Csc *sin (pi/2-x)=cotx
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OpenStudy (loser66):
csc ???
OpenStudy (loser66):
it should be \(csc x * sin(\pi/2 -x)\)
OpenStudy (loser66):
then, it is trivial
OpenStudy (er.mohd.amir):
Csc x* sin(pi/2-x)=Csc x* cos x=cos x /sin x=cot x
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