Math note 3

 
The phase, kx+wt+f, is measured in radians.  When you calculate the value of sin(kx+wt+f), either

Radians or degrees

 

Example
A sinusoidal wave is described by
where y and x are in meters and t in seconds.  Find the displacement at x = 6.0 m and at t = 4.0 s.
Answer


Calculator: rad mode
or
Calculator: deg mode