Find the (x, y, z) cartesian coordinates of the point with the following spherical polar coordinate r=1, theta = pi/2 . Phi =pi x = -1 , y = -1 , z = 0 x = 1 , y = -1 , z = 0 x = 1 , y = 1 , z = 1 x = -1, y = 0 , z = 0 x = -1 , y = 1 , z = 0

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