Question

what is the graph of one cycle of a cosine curve with amplitude 2 period 2pi and a < 0?

Answer 1

what is a< 0 mean ?

Answer 2

exactly my thought

Answer 3

that A is less than 0?

Answer 4

what A?

Answer 5

if it means the A in
A cos(x)

then maybe it means
-2 cos(x)

type this into google
plot -2*cos(x)

to see a graph

Answer 6

its a regular cosine curve. Only the amplitude is 2 and the graph is negated. The period is 2π like the original Cos Θ graph. So just sketch it.

Answer 7

Like this?

Answer 8

the distance from "bottom" to "bottom" is the distance between 0 and pi
in other words, pi

you want a period of 2pi

Answer 9

is that correct?

Answer 10

Yes, it is correct.