Sin(A_B)=1/2.cos(A_B)=1/2 find Aand B​

There was a 50 percent increase in price

Step-by-step explanation:

To get the percentage increase in price, we will have to apply this formula:

(New price - original price)/ (Original price) X 100

From our question, we have that new price = $9

Original price = $6

Percentage change in price =

Hence, this means that there was a 50 percent increase in price if a CD bought for $6 was sold for $9