Spherical Unit Vectors in relation to Cartesian Unit Vectors

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Spherical Unit Vectors in relation to Cartesian Unit Vectors. ˆˆ ˆ, , r θ φ can be rewritten in terms of ˆ ˆ ˆ, ,. x y z using the following transformations: ˆ. ˆ. ˆ. ˆ sin cos .
Spherical Unit Vectors in relation to Cartesian Unit Vectors

rˆ , θˆ , φˆ can be rewritten in terms of xˆ , yˆ , zˆ using the following transformations:

rˆ  sin  cos  xˆ  sin sin  yˆ  cos zˆ θˆ  cos cos  xˆ  cos sin  yˆ  sin  zˆ φˆ   sin  xˆ  cos  yˆ NOTICE: Unlike xˆ , yˆ , zˆ ; rˆ , θˆ , φˆ are NOT uniquely defined!

The game can be played in reverse to find xˆ , yˆ , zˆ in terms of rˆ , θˆ , φˆ :

xˆ  sin  cos  rˆ  cos cos θˆ  sin  φˆ yˆ  sin  sin rˆ  cos sin θˆ  cos φˆ zˆ  cos rˆ  sin  θˆ