Question

HELPPPPPPP.
Which of the following is the graph of f(x) = cos(x)?

Answer 1

the one that looks like this:
http://www.wolframalpha.com/input/?i=cos%28x%29

Answer 2

we don't have one like that

Answer 3

hint:

cos(0) = 1

Answer 4

would it be the third one?

Answer 5

sure you do!
i can see it without opening them

Answer 6

in the third one it's going through (0,0)

so that is implying that cos(0) = 0, which is false when it should be cos(0) = 1

Answer 7

what @jim_thompson5910 said
make sure it goes through the point \((0,1)\) on the graph
i.e. it crosses the \(y\)-axis at 1

Answer 8

ohhh so the second one since it goes through the 1 ?

Answer 9

yup

Answer 10

okay thanks :)