The amplitude of the function is $\"\"$ and period is $\"\"$ .

Find the equation of a sine function.

The genreral form of sine function is $\"\"$ .

Where the amplitude is $\"\"$ and period is $\"\"$ .

The amplitude is $\"\"$

The period is $\"\"$ .

$\"\"$

$\"\"$ .

$\"\"$

Substitute $\"\"$ and $\"\"$ in $\"\"$ .

Therefore,the equation of the sine function is $\"\"$ .

The equation of the sine function is $\"\"$ .