1.) simplify the expression.
sin ( u + π/2 )
a.) tan u
b.) sin u
c.) csc u
d.) cos u
e.) cot u

As voters exit the polls, you ask a representative random sample of voters if they voted for a proposition. if the true percentage of voters who vote for the proposition is 63%, what is the probability that, in your sample, exactly 5 do not voted for the proposition before 2 voted for the proposition? the probability is