Question

Use the graph below to answer the question that follows: trig graph with points at 0, 2 and pi over 2, 0 and pi, negative 2 and 3 pi over 2, 0 and 2 pi, 2 and 5 pi over 2, 0 and 3 pi, negative 2 What trigonometric function represents the graph?

f(x) = −2 cos(x − pi over 2) f(x) = −2 sin(x − pi over 2) f(x) = 2 cos(x − pi over 2) f(x) = 2 sin(x − pi over 2)

What trigonometric function represents the graph?



 f(x) = −2 cos(x − pi/2) 
 f(x) = −2 sin(x − pi/2 )   
f(x) = 2 cos(x − pi/2)   
f(x) = 2 sin(x −pi/2 )

Answer 1

f(x) = −2 cos(x − pi over 2)

Explanation:

Because the absolute value of -2 is 2,and cos starts at its maximum

Answer 2

That would be f(x) = -2sin(x - pi/2)