Solving the Wave Displacement Equation: y = 0.37 sin(t - 3.88x)

[JJones_86]

Homework Statement

The displacement (in meters) of a wave is y = 0.37 sin((pi)t - 3.88(pi)x), where t is in seconds and X is in meters.

What is the displacement y when t = 34.4 s and x = 6.7 m?

Homework Equations

y = 0.37 sin(t - 3.88x)

The Attempt at a Solution

y = 0.37 sin((pi)34.4-3.88(pi)6.7)
y = .16452 meters


What am I missing here? All I should have to do is plug the t and x values into the given equation right? For some reason I'm getting it wrong.

 

[alphysicist]

Hi JJones_86,

The Attempt at a Solution

y = 0.37 sin((pi)34.4-3.88(pi)6.7)
y = .16452 meters


What am I missing here? All I should have to do is plug the t and x values into the given equation right? For some reason I'm getting it wrong.

You need to set your calculator to radians.