$\"\"$

The general form of the equation is $\"\"$ , where $\"\"$ is the time in seconds.

Here amplitude is $\"\"$ .

Period is the reciprocal of frequency.

Here frequency is $\"\"$ hertz.

Period of contralto is $\"\"$ .

Find value of $\"\"$ .

Period $\"\"$ .

$\"\"$

The value of $\"\"$ is $\"\"$ .

Equation for a sine function that models the initial behavior is $\"\"$ . $\"\"$

Equation for a sine function that models the initial behavior is $\"\"$ .