1.

Evaluate `lim_(hto0) (2[sqrt(3)sin((pi)/(6)+h)-cos((pi)/(6)+h)])/(sqrt(3)h(sqrt(3)cosh-sinh)).`

Answer» Correct Answer - `4//3`
`underset(hto0)lim(2[sqrt(3)sin((pi)/(6)+h)-cos((pi)/(6)+h)])/(sqrt(3)h(sqrt(3)cosh-sinh))`
`underset(hto0)lim((4)/sqrt(3)[sqrt(3)/(2)sin((pi)/(6)+h)-(1)/(2)cos((pi)/(6)+h)])/(h(sqrt(3)cosh-sinh))`
`=underset(hto0)lim(4)/(sqrt(3))xx(sinh)/(h)(1)/((sqrt(3)cosh-sinh))=4/3`


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