The motion of a particle executing simple harmonic motion is described by the displacement function.
x(t) = A cos (wt +Ф ).
If the initial (t = 0) position of the particle is 1 cm and its initial velocity is w cm/s, what are its amplitude and initial phase angle? The angular frequency of the particle is ``\pi`` s^-1. If instead of the cosine function, we choose the sine function to describe the SHM: x = B sin (wt + α), what are the amplitude and initial phase of the particle with the above initial conditions?