Will give brainliest, reporting stupid answers. In figure 1, the coordinates of B are (1/2, square root 3 over 2). Find the values of sin pie/3, cos pie/3, tan pie/3.

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?