Answer:
3 7/9
Step-by-step explanation:
I believe the answer is 3 7/9
-12
-18
-n+8=20
-n=20-8
n=12
-36=n-18
-n=-18+36
n=-18
SinA = CosB
SinB = CosA
CosA = SinB
CosB = SinA
wheres the table above