2cosAcosB =

• cos(A + B) + cos(A - B)
• sin(A - B) + tan(A + B)

James adds two numbers a + b. sally adds the same two numbers but reverse the order b + a what property of addition assures us that james and sally will get the same sum

Vinay constructed this spinner based on the population of teachers at his school according to vinays model what is the probability that he will have a male history teacher two years in a row

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?