Name four angles between 0 and 360 degrees with a reference angle of 20 degrees show work

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?

If the value of cos330°is√3/2 then find cos 165°.

Adeposit of 5500 at 6% for 3 years equals