P+Q+R=180 then to prove (cosp/sinq. sinr) + (cosq/sinr. sinp) + (cosr/sinp. sinq)=2

For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.

The estimated number of people to attend the last bengals game of the season was 2000. the actual number of fans attending was 1200. by what percent did the estimate differ from the actual?

Extra points! find the missing dimension! need asap