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10.2.10  Transforming arcsin into arctan

The asin2atan command transforms arc sines in an expression to arc tangents by using the identity

arcsin(x)=arctan⎛
⎜
⎜
⎜
⎜
⎝
x
√
1−x2
⎞
⎟
⎟
⎟
⎟
⎠
. 

Example

asin2atan(asin(x))
     
arctan⎛
⎜
⎜
⎜
⎜
⎝
x
√
1−x2
⎞
⎟
⎟
⎟
⎟
⎠
          

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