Write the equation of the sine function that has an amplitude of 4, a period , and a phase shift . ( 10 points ).( ) 7 3 4csc 2 2 f x x     = +    ( ) 5 3 2cot 4 4 f x x    = −    ( ) 4 tan 3 3 2 h x x     = +    f x A Bx C ( ) =  sin( ) 2 3  6