the distance across a river is to be determined by two sightings, a and b, from one side of the river. a reference point is chosen on the opposite side of the river. from sighting point a the reference point is determined to be 600 from a line parallel to the river. sighting point b is chosen to be directly opposite the reference point so that the sighting angle is 900 from the line parallel to the river. the distance between a and b is measured to be 20 meters. find the distance across the river.
hint: sketch a right triangle diagram for the situation. you might need:
cos 60degrees = 1/2 , sin 60degrees = sqrt3/2

Aprofessional hockey team has noticed that, over the past several seasons, as the number of wins increases, the total number of hot dogs sold at the concession stands increases. the hockey team concludes that winning makes people crave hot dogs. what is wrong with the hockey team's conclusion? a) it does not take into account the attendance during each season. b) it does not take into account the number of hamburgers sold during each season. c) it does not take into account the number of concession stands in the hockey arena. d) it does not take into account the number of seasons the hockey team has been in existence.