The Cosine Function

What is the period of the graph?

What is the amplitude of the graph?

• 2π/5

• π

• 5

• 5π

what's the amplitude of y=3 cos (-2x)?

• -2

• 2

• 3

• -3

What's the amplitude of y= cos 5x

• 2

• 5

• -5

• 1

What is the domain of the graph?

• all real numbers

What is the range of the graph?

• all real numbers

• (0,3)

• (2,3)

• (3,3)

• (4,3)

• (6,3)

The __________ represents half the distance between the max and min of a sine or cosine graph. 

• Period
• Frequency
• Extreme Values
• Amplitude

The period of a sine or cosine graph can be found by ....