AP Precalculus Sinusoidal Functions

What is the amplitude of the graph?

• 3

• 2

• -3

• -2

What is the midline of the graph?

What is the equation of graph? 

• y = sin 5x
• y =  cos 5x
• y = 5 sin x
• y = 5 cos x 

• min: 13ºC

  max: 25ºC

• min: 17ºC

  max: 23ºC

• min: 5ºC

  max: 17ºC

• min: 8ºC

  max: 30ºC

The table gives characteristics of trigonometric function 𝑓 for selected intervals of 𝜃. Which

of the following could define 𝑓(𝜃)?

• cos 𝜃 only

• sin 𝜃 only

• cos𝜃 or sin𝜃

• Neither cos𝜃 nor sin𝜃

• 1. 𝑓 is decreasing, and the graph of 𝑓 is concave down.

• 1. 𝑓 is decreasing, and the graph of 𝑓 is concave up.

• 1. 𝑓 is increasing, and the graph of 𝑓 is concave down.

• 1. 𝑓 is increasing, and the graph of 𝑓 is concave up.

• 5

• 0.25

• 1.75

• 2.5