The lim as x goes to 0- for cos(x)/sin(x). I know the answer is negative infinity but I don't really understand why.

Answer 1

sin(-0.000000001)=-0.000000001
cos(-0.000000001)=0.999999999
sin/cos=-999999999

Answer 2

I mean
cos(-0.000000001)/sin(-0.000000001)=
=-999999999