Question

lim x approaches 0 (x(1-cosx)/tan3x)

Answer 1

have you been taught the l'hopital rule?

Answer 2

yes

Answer 3

when annalysing x to 0. you'll see that 0/0.
so you're allowed to use the l'hopital rule.

Answer 4

yes
im unable to solve it

Answer 5

lim x approaches 0 (x(1-cosx)/tan^3x)

Answer 6

its tan cube of x

Answer 7

tan(3x) or (tan(x))^3