Finding the amplitude and period for a given graph

The video tutorial explains how to find the amplitude and period of cosine functions. It introduces the basic rules for amplitude and period, describes the components of a cosine function, and demonstrates how to determine the values of A and B. The tutorial also provides a step-by-step guide to calculating the period, emphasizing the importance of understanding fractions and multiplication. The session concludes with a summary and addresses any questions from the audience.

What is the formula for calculating the period of a trigonometric function?

• B times 2π

• B divided by 2π

• 2π divided by B

• 2π times B

In a cosine function, what does the 'a' value represent?

• The frequency of the function

• The period of the function

• The phase shift of the function

• The amplitude of the function

How do you determine the 'B' value in a cosine function?

• It is the coefficient of the cosine term

• It is the constant subtracted from the function

• It is the coefficient of the variable 'x'

• It is the constant added to the function

What is the period of a function if B equals π/2?

• 4

• 2

• 2π

• π

If the amplitude of a cosine function is 3/2, what is the absolute value of 'a'?

• 3

• 2

• 1/2

• 3/2