What is the equation of the following graph?

y = cos x

the graph has an amplitude of 1 and a period of 2π and crosses the y-axis at 1 for x = 0 and the x-axis at 0 for x =

1. d.90

2. e. none of these (80)

3. a. 0

4. b. 6

5. e. none of these (10)

6. a. 5

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58