1.

Evaluate the following limits: `lim_(xrarr0)((cot2x-cosecex))/(x)`

Answer» Correct Answer - `-1`
Given limit `=lim_(xto0)((cos2x-1))/(xsin2x)=lim_(xto0)(-(1-cos2x))/(xsin2x)`
`=lim_(xto0)(-2sin^(2)x)/(2xsinxcosx)=-lim_(xto0)(tanx)/(x)=-1.`


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