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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 angle2xyz(azi, zen):
 """Convert azimuth and zenith to cartesian."""

    azi = xu.deg2rad(azi)
    zen = xu.deg2rad(zen)
    x = xu.sin(zen) * xu.sin(azi)
    y = xu.sin(zen) * xu.cos(azi)
    z = xu.cos(zen)
    return x, y, z