What is the domain of f(x) = cos(x)?

A)the set of real numbers Negative 2 pi less-than-or-equal-to x less-than-or-equal-to 2 pi
B)the set of real numbers Negative 1 less-than-or-equal-to x less-than-or-equal-to 1
C)the set of real numbers 0 less-than-or-equal-to x less-than-or-equal-to 2 pi
D)the set of all real numbers

step-by-step explan mxfcg'k; uafwgzfgjhklhgation:

idc

step-by-step explanation:

idk

these sign is used to tell weather the number is greater or less than the number   <   or >     but this sign means its equal =    

hope this you and

step-by-step explanation:

answer: your gay

step-by-step explanation:

you dont know math