$6.20.
2/3=.6666666667
Multiple 9.30 by .6666666667 and you will get the 2/3 cost of the pizza.
Sin(a+/-b)=sin(a)cos(b)+/-cos(a)sin(b)
sin(17+26)=sin(17)cos(26)+cos(17)sin(26)
Answer: sin(43)
A diameter is a line segment that has end points on a circle and passes through the centre of the circle.