What is the domain of f(x) = cos(x)?
the set of real numbers Negative 2 pi less-than-or-equal-to x less-than-or-equal-to 2 pi
the set of real numbers Negative 1 less-than-or-equal-to x less-than-or-equal-to 1
the set of real numbers 0 less-than-or-equal-to x less-than-or-equal-to 2 pi
the set of all real numbers

Option D: The set of all real numbers

Explanation:

Given that the function

We need to determine the domain of the function.

The domain of the function is the set of all input values for which the function is real and well defined.

In other words, the domain of the function is the set of all independent x - values of the function.

Thus, the function cos (x) is real and well defined in the interval

Hence, the function cos (x) is real and well defined for all real numbers.

Therefore, the domain of the function is the set of all real numbers.

Hence, Option D is the correct answer.

points are handed out whenever you post answers.

brainliest answers are handed out by the person asking the question, so whether your answer is picked depends entirely on whether the asker bothers to pick

if you're asking about your rank, it depends on having a certain number of points and a certain number of brainliest answers. for example, at the time of this writing, i have 44338 points out of 15000 needed for the next (nearly triple the requirement! ) but i only have 24 out of 50 required brainliest answers. this number decays, meaning after a certain amount of time (i think about a month), the total number of brainliest answers you've earned doesn't count toward this total. (i've been stuck at the same rank for a long

the lesson to learn here is that you shouldn't worry about points or rank. chances are, no matter how good an answer you may provide, your efforts will go mostly unnoticed unless you focus on the newest/most active questions that get posted.

think about it deeply and passionately about this property

i am sorry