5. A person whose eyes are 5 feet above the ground is standing on the runway of an airport 100 feet from the control tower. That person
observes an air traffic controller at the window of a 132 foot tower.
What is the angle of elevation?

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

Aportion of a hiking trail slopes downward at about an 84° angle. to the nearest tenth of a flot, what is the value of x, the distance the hiker traveled along the path, if he has traveled a horizontal distance of 120 feet? a. 143.3 b. 12.5 c. 120.7 d. 130.2

We just started the introduction into circles and i have no idea how to do this.