what is the domain of f(x)=cos(x)?
what is the y value of tan(x) when x=-180
the range of f(x)=sin(x)is−1≤y≤1

soo sorry about all the questions I really don't understand this section

Question

what is the domain of f(x)=cos(x)?
what is the y value of tan(x) when x=-180
the range of f(x)=sin(x)is−1≤y≤1 


soo sorry about all the questions I really don't understand this section

anonymous · Answer

@SomeGirl1999  help?

anonymous · Answer

@Thatyoungbuttercup help?

anonymous · Answer

For the first question the answer is (-infinity,+infinity)

somegirl1999 · Answer

Sorry I'm not good at math.

anonymous · Answer

the choices are 
a.-1
b.0
c.1
d.does not exist

anonymous · Answer

@SomeGirl1999 ok thanks anyways

anonymous · Answer

oh wait no those answers are for a different quiestion

anonymous · Answer

??? so the answer choices are?  lol

anonymous · Answer

a.all real numbers
b.$$-1\le x \le1$$
c.$$x \le 0$$
d.$$x \ge 0$$

anonymous · Answer

for the first question?

anonymous · Answer

yeah

shubhamsrg · Answer

I dont think you should be told the direct answer,

shubhamsrg · Answer

because that is simply cheating :|

anonymous · Answer

^True! but i dont know how to explain it though:(

shubhamsrg · Answer

nothing to explain in the domain of cosx. @nikakuz should better pick up a book and learn as a fact, the domains of basic trigonometric fuctions.

shubhamsrg · Answer

functions*

anonymous · Answer

I did I tried but I really don't understand it Im horrible at math

shubhamsrg · Answer

cheating is not gonna help

shubhamsrg · Answer

so, what do you understand by the term domain ?

anonymous · Answer

like x?

shubhamsrg · Answer

hmm, close enough.
It means the values x can take such that it gives out a real value of y.

in your case, y=cosx
Do you think there is any value of x, on the number line, for which there is no real value of y ?

anonymous · Answer

um no?

shubhamsrg · Answer

hmm right, so your answer will be... ?

anonymous · Answer

i don't know i don't get how to get the answer from that

shubhamsrg · Answer

yes , you don't. And that is just sad . :(

anonymous · Answer

yeah cuz im trying to learn this from an online class so its hard and im terrible at math so that doesn't help

anonymous · Answer

please just help me i did a bunch of other problems i just don't understand these 3

anonymous · Answer

@Thatyoungbuttercup please help me

anonymous · Answer

@shubhamsrg dude help a boy out! he has been working hard just cause he doesnt show it doesnt mean he has
@nikakuz i forgot all this sorry i just know the answer for the first one but i dont know how to explain

anonymous · Answer

the first question is all real numbers!

anonymous · Answer

alright thank you!!

anonymous · Answer

wait i think i got the answer for the second one

anonymous · Answer

the choices i gave earlier are for the second one

anonymous · Answer

like the first choices

anonymous · Answer

what!0_o
what is the domain of f(x)=cos(x)?
ANSWER:all real numbers!
what is the y value of tan(x) when x=-180
ANSWER:0

anonymous · Answer

nvm haha
thank you soo much

shubhamsrg · Answer

Well you can;t learn unless you make effort from your side too. You are not making effort to learn.
hmm, nevermind, I'd still like to wish you good luck for the future.

anonymous · Answer

@nikakuz  You got it now kinda for the last one?

anonymous · Answer

@shubhamsrg i tried making an effort but i just don't understand it

anonymous · Answer

not really true or false though so at least i have a 50/50 chance

anonymous · Answer

its true!

anonymous · Answer

yayy thank you soo much i just submitted the assignment and i got 20 out of 20 yayy

anonymous · Answer

Im so happy for you dude! :D

anonymous · Answer

:D