How to Find the Amplitude and Period of the Cosine Equation

The video tutorial explains how to find the period of a function using the formula 2π/B. It clarifies that B is the coefficient of X in the equation and demonstrates how to handle fractions in the denominator by multiplying by the reciprocal. The example provided shows that multiplying 2π by the reciprocal of 2/3 results in a period of 6π.

What is the formula used to find the period of a function?

• π / A

• 2π / A

• 2π / B

• π / B

How can the expression 2X/3 be rewritten?

• 3/2 * X

• X/2 * 3

• 2/3 * X

• 3X/2

In the expression 2X/3, what is the correct value of B?

• 3

• 2

• 2/3

• 1/3

What operation is used to eliminate a fraction in the denominator?

• Division by the reciprocal

• Multiplication by the reciprocal

• Subtraction

• Addition

What is the final result when 2π is multiplied by the reciprocal of 2/3?

• 5π

• 4π

• 6π

• 3π