Brett is 75 feet from the base of a building. he measures the angle of elevation to the top of the building and records it as 80 degrees. if each story of the building is 17 feet how many floors does the building have

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

283 square feet

step-by-step explanation:

good luck