Q2 goes from 90-180 degrees from the positive x-axis.
So if the line bisects Q2, theta=(90+180)/2=135 degrees.
Sin(135)=+sin(180-135)=+sin(45)=sqrt(2)/2=0.70710678 approx.
I believe the answer to that problem would be $68.55, since you have to add them together and then multiply them by .07 for the percentage.
For both of these, we will divide the wanted outcome by the number of possible outcomes. We will end up with a decimal. A decimal multiplied by 100 becomes a percent.
[a] 50%

[b] 52%

