Helping students gain understanding and self-confidence in algebra.
etxei wrote:standing at the top of a 150ft bulding , an observer angle of depression to the top of a smaller building is 12 degrees, and 34 degrees to the base of the smaller building, thus find the height of the smaller building.
my answer give the smaller building heigh as 120 ft, whereas by the authors if 102.7 ft
solved it by tan 46=opposite/adjacent= tan 46=150/adjacent= solving for the adjacent =144.85
etxei wrote:effectively adjacent stand for the distance between the buildings, 46 degrees comes from adding both 12 and 34....
hope you have the adobe reader, is the first exercise on page 20....