The component waves producing a stationary wave have amplitude, frequency, and velocity of 8 cm, 30 Hz, and 180 cm/s respectively. Write the equation of the stationary wave?
a) (8 sin(360t - 180x))
b) (8 sin(180t + 360x))
c) (8 sin(2π ⋅ 30t - π ⋅ 180x))
d) (8 sin(2π ⋅ 180t - π ⋅ 30x))
