Sec a-tan a = sec a+tan a
(iv)
1-sin'c
costat
= 1 + 2 tan'a
(v) seca. coseca=tan'a + cota +2
cos a
(vi) 1 + sin a
1-sin a
cosa

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq less than 132. the probability that a randomly selected adult has an iq less than 132 is?