Question

Question #e30a7

Answer 1

`lim_(x->0)(1-cos(2x))/(1-tan(2x))=0`

Explanation:

We want to solve

`lim_(x->0)(1-cos(2x))/(1-tan(2x)`

Plugging in `x=0` doesn't leave to an indeterminate form

Therefore

`lim_(x->0)(1-cos(2x))/(1-tan(2x))=(1-cos(2*0))/(1-tan(2*0))=(1-1)/(1-0)=0`