matrix wise sine inverse
t=asinm(x)
:x real or complex square matrix : :t real or complex square matrix :
t are sine inverse of the x matrix. Diagonalization method is used. For non symmetric matrices result may be inaccurate.
A=[1,2;3,4]
`sinm`_(asinm(A))
asinm(A)+%i*`logm`_(%i*A+`sqrtm`_(`eye`_()-A*A))