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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def rotateInZMat(theta_deg):
 """Rotate a vector theta degrees around the z-axis Equivalent to yaw left Rotates the vector in the sense that the x-axis is rotated towards the y-axis. If looking along the z-axis (which is not the way you usually look at it), the vector rotates clockwise. If sitting on the vector [1,0,0], the rotation is towards the left Input: theta_deg (float) Angle through which vectors should be rotated in degrees Returns: A matrix To rotate a vector, premultiply by this matrix. To rotate the coord sys underneath the vector, post multiply """


    ct = np.cos( np.radians(theta_deg))
    st = np.sin( np.radians(theta_deg))
    rMat = np.array([  [ ct, -st, 0],
                       [ st,  ct, 0],
                       [  0,   0, 1],
                    ])

    return rMat