Abird, b is spotted flying 900ft from an observer. the observer, o also spots the top of a tower, t at a height of 200ft. what is the angle of depression from the bird to the observer?
a. 12.52 degrees
b. 12.84 degrees
c. 77.16 degrees
d. 83.69 degrees

The length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?