Find the limit, LIM (x tends to 0) [1-cos (1-cosx)] / X & # 178; (arcsinx) 178;, a problem, kneel down for a master!
Numerator 1-cos (1-cosx) ~ 1 / 2 (1-cosx) ^ 2 ~ 1 / 8x ^ 4 denominator ~ x ^ 4
Numerator 1-cos (1-cosx) ~ 1 / 2 (1-cosx) ^ 2 ~ 1 / 8x ^ 4 denominator ~ x ^ 4