Question 185821
x+(90-x)/2=89.5
(2x+90-x)/2=89.5
x+90=2*89.5
x+90=179
x=179-90
x=89 degrees.
90-89=1 degree.
Proof:
89+(90-89)/2=89.5
89+1/2=89.5
89.5=89.5