cot²x=1/tan²x
tan²x=sec²x-1
cot²x=1/(sec²x-1)
cotx= -1/ √(sec²x-1)
cotx= -1/ √(sec²x-1)References :
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November 26th, 2008 at 5:06 am
cot²x=1/tan²x
tan²x=sec²x-1
cot²x=1/(sec²x-1)
cotx= -1/ √(sec²x-1)
References :