Question

What is the maximum value that the graph of y = cos x assumes?

Answer 1

I think its 1 but im not sure

Answer 2

that is correct

Answer 3

you can see it here

Answer 4

a way to think about it:
cosine is the ratio of one side of a right triangle to it's hypotenuse\[\cos\theta={\text{adjacent side}\over{\text{hypotenuse}}}\]since the leg of a right triangle can never be longer than the hypotenuse, the maximum value it can take on is one

Answer 5

one