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Coordinate Systems: 3D

(Note: there are two spherical coordinate system conventions. The one used here is that the angle is on the plane z=0, measured clockwise from the x-axis. The angle is the angle relative to the z-axis.)

Variant #: 8

In cartesian coordinates x = 2.919, y = -2.529 and z = 10.22. What is the angle ?

o.?

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