At a certain time of day, the angle of elevation of the sun is 80°. To the nearest foc find the height of a tree whose shadow is 45 feet long.
The height of a tree whose shadow is 45 feet long is feet.

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]