11 Triangle ABC is a right triangle where CAB is the right angle and ABC is approximately 56.31º. Using trigonometry, calculate the lengths and
complete the triangle by drawing segment AC and segment BC.

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.