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Transform arcsin into arctan : asin2atan

asin2atan takes as argument an expression containing inverse trigonometric functions.
asin2atan replaces arcsin(x) by arctan($\displaystyle {\frac{{x}}{{\sqrt{1-x2}}}}$), in this expression.
Input :
asin2atan(asin(x))
Output :
atan(x/sqrt(1-x^2))



giac documentation written by Renée De Graeve and Bernard Parisse