Which of the following is the graph of y = cos (2x) ?

answer is a on edge2020

Step-by-step explanation:

taking the test, graphed it

Select the one which meets the following characteristics.

Step-by-step explanation:

y = cos (2x)

Characteristics:

Mean line at y = 0

Amplitude = 1

Period = 360/2 = 180° or pi radians

i. e one complete cos cycle is 0 to 180, next is 180 to 360 and so on

Range : from - 1 to 1