Abridge builder wants to know the width of a river. he stands at point a along the river. he picks a point c directly across the river. he then walks downstream 90 feet from point a to point b. from point b, he sites c and determines the angle between the bank and point c (θ), to be 43º. what is the width of the river?

The art class is planning to paint a mural on an outside wall. this figure is a scale drawing of the wall. width: 11 in length: 28 in unit rate: 1.5 ft per in. write the ratio of the area of the drawing to the area of the actual mural. write your answer as a unit rate. show that this unit rate is equal to the square of the unit rate 1.5 ft per in