Compose with the inverse function:
Use
PowerExpand to disregard multivaluedness of the
ArcSin:
Alternatively, evaluate under additional assumptions:
Use
TrigToExp to express through logarithms and square roots:
This shows the branch cuts of the
ArcSin function:
Expand assuming real variables:
Solve an inverse trigonometric equation:
ArcSin is a special case of various mathematical functions: