Hey, I wrote some code that would do the law of sines and cosines for me and, when i try to run it, It says error syntax and when I press goto, it redirects me to the first prompt. (Prompt r)

Please help.

**Code:**```
Disp "Sine or Cosine"
```

Disp "1.Sine"

Disp "2.Cosine"

Prompt r

If r=1

Then

Goto s

Else

If r=2

Then

Goto c

Else

Disp "you stupid"

Lbl c

Prompt A,a,b,c

Else

If X=a

Then

Disp sqrt(b^2-c^2-(2bc)cosA

If X=A

Then

Disp cos⁻¹((a^2-b^2-c^2)/(2bc)))

Else

Disp "you stupid"

Lbl s

Prompt A,B,a,b,

If X=a

Then

Disp (bsin(A))/(sin(B))

Else

If X=A

Then

Disp sin((asinB)/b)

Else

Disp "you stupid"

Please help.