:ClLCD
:Disp "cranwell@yahoo.com"
:Degree
:Disp "Use 0 (zero) if side'"
:Disp "or angleô unknown."
:Disp "Possibilities="
:Disp "Aô Bô(a'or b'or c')"
:Disp "Aô b' c'"
:Disp "a' b' c'"
:Disp "Aô a' b' (ambig)"
:Lbl A
:Input "Aô=",A:0üP:0üX:0üY:0üZ
:If Aø0:Then
:Input "Bô=",B:Else:0üB:End
:Input "c'=",Z:If (Z*B)==0
:Input "b'=",Y:If A(Y*B+Z)==0
:Input "a'=",X:If A==0:Then
:cosñ ((Yò+Zò-Xò)/(2*Y*Z))üA:cosñ ((Zò+Xò-Yò)/(2*X*Z))üB:Goto NEW:End
:If Aø0 and B==0:Then:If Xø0:401üP:Disp P
:If Y==0:Goto AMB:If Yø0 and Zø0:Then:ð(Yò+Zò-2Y*Z cos A)üX
:cosñ ((Zò+Xò-Yò)/(2*X*Z))üB:round(B,6)üB:Goto NEW:End:End
:Lbl B:If imag Bø0:Then:Disp "NO TRIANGLE":Goto A:End
:If Bø0:Then:180-A-BüC:If Zø0:Then:If Xø0:Then
:If Yø0:Goto NEW:End:End
:If Zø0 and X==0:(Z sin A)/sin CüX
:If Xø0 and Y==0:(X sin B)/sin AüY
:If Yø0 and Z==0:(Y sin C)/sin BüZ:Goto B:End
:Lbl AMB:If Y==0:Then:Disp "Use  Aôb a":Goto A:End
:sinñ (Y sin A/X)üB:180-BüF:180-F-AüE:(Y sin E)/sin FüW:Goto B
:Lbl NEW:180-A-BüC:.5(Y*Z sin A)üK:ClLCD
:Outpt(1,1,"Aô="):Outpt(1,4,A)
:Outpt(2,1,"Bô="):Outpt(2,4,B)
:Outpt(3,1,"Cô="):Outpt(3,4,C)
:Outpt(6,1,"a="):Outpt(6,3,X)
:Outpt(7,1,"b="):Outpt(7,3,Y)
:Outpt(8,1,"c="):Outpt(8,3,Z)
:If P==0:Then
:Outpt(4,1,"AREA="):Outpt(4,6,K):Else
:Outpt(4,1,"ëô="):Outpt(4,4,F)
:Outpt(5,1,"ìô="):Outpt(5,4,E)
:Outpt(8,11," ²=  "):Outpt(8,14,W):End:Goto A
: