Convertir decimales a radianes

[Picard]

Lo solucione asi:
String DecASexa(long double dec)
{
short grados = dec;
long double temp = std::fabsl(dec - grados);
unsigned short minutos = (temp *= 60);
unsigned short segundos = (temp-minutos) * 60;
return Format("%d\xB0 %d' %d\"", ARRAYOFCONST((grados, minutos, segundos)));
}

void __fastcall TfrmPrincipal::EasyMap1MouseMove(TObject *Sender,
TShiftState Shift, int X, int Y)
{
//long double fX,fY;
long double Latitud1;
long double Longitud1;

EasyMap1->ScreenToMap(X,Y,Latitud1,Longitud1);
lblLatMouse->Caption = (DecASexa(Latitud1));
lblLongMouse->Caption = (DecASexa(Longitud1));
Application->ProcessMessages();
}
//---------------------------------------------------------------------------
Ahora necesito,por ej : 41º26'34" = 41º26'34"N ó -41º26'34" = 41º26'34"S
Gracias