1.

Among (i) `lim_(xtooo) sec^(-1)((x)/(sinx))" and "(ii) lim_(xtooo) sec^(-1)((sinx)/(x)).`A. `-(1)/(2sqrt(2))`B. `(1)/(2sqrt(2))`C. `(1)/(sqrt(2))`D. does not exist

Answer» Correct Answer - A
`underset(xtooo)limsec^(-1)((x)/(sinx))=sec^(-1)((oo)/(sinoo))`
`=sec^(-1)((oo)/("any value between "-1" to "1))`
`=sec^(-1)(+-oo)=(pi)/(2)`
`underset(xtooo)limsec^(-1)((sinx)/(x))=sec^(-1)((sinoo)/(oo))`
`=sec^(-1)(("any value between "-1" to "1)/(oo))`
`=sec^(-1)0` = not defined
Hence, (i) exists but (ii) does not exist.


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