tolong bantu no 8 ya kak :)

Lim (√(1 - cos (x - 2)) / √(x^2 - 2x)
= √{Lim (1 - cos (x - 2))/(x^2 - 2x)}
= √{Lim 2 sin^2 1/2 (x - 2)) / x(x - 2)}
= √{Lim 2 . (sin 1/2 (x - 2))/x . (sin 1/2 (x - 2))/(x - 2) }
= √{2 . (sin 1/2 (2 - 2))/2 . 1/2}
= √(2 . (sin 0)/2 . 1/2)
= √(2 . 0/2 . 1/2)
= √0
= 0