Question

What is the basic trig function of a graph that starts at 1 on the y axis, then goes down 1 on the y axis at 3 on the x axis. (It's a wave).

Answer 1

cos

Answer 2

Wow how do you know that?

Answer 3

is it?

Answer 4

and its not 3, its \[\pi\]

Answer 5

http://www.wolframalpha.com/input/?i=plot+y%3Dcos(x)

Answer 6

Ohhhh is it because it starts on the y axis and goes down? And what are each of the tick marks?

Answer 7

nevermind i read it wrong

Answer 8

cosine goes to -1 at pi, you are looking for a function that "goes down one" at pi

Answer 9

Where is pi? The curve 's middle is at the third grid mark... ("grid marks are spaced 1 unit apart") What does each of the units mean?

Answer 10

probably just 1

Answer 11

pi is just a number, happens to be about 3.1415926...etc

Answer 12

so when you say 3 on the x axis, its quite likely you are actually talking about pi which is close to 3, but important to note the difference.