Why is this wrong? Wave frequencies

[1MileCrash]

Homework Statement

Δp = (1.3 Pa) sin π[(3.00 m^-1)x - (300 s^-1)t].

Is the pressure of a wave.

Find frequency

Homework Equations

The Attempt at a Solution

Angular frequency = 300s^-1 = 300 hertz.

Frequency = angular frequency / 2pi = 47.746

Someone, please explain how I managed to screw up that very simple equation.

 

[PeterO]

Homework Statement

Δp = (1.3 Pa) sin π[(3.00 m^-1)x - (300 s^-1)t].

Is the pressure of a wave.

Find frequency

Homework Equations

The Attempt at a Solution

Angular frequency = 300s^-1 = 300 hertz.

Frequency = angular frequency / 2pi = 47.746

Someone, please explain how I managed to screw up that very simple equation.

Can you explain what the red bit is all about.

[Note: it may be some modern technique, but I hate it when a formula substitution is full of individual units. Makes trying to read it next to impossible. Even if the formula you were about to substitute into was written first would be a help]