Perceived visual angle feet away, so it subtends a visual angle of 14 degrees. It can be said that the house "looks larger and farther away" than the window, meaning that the perceived linear size "S′" for the house's width is much larger than "S′" for the window; for instance a person might say the house "looks about 40 feet wide" and the window "looks about 3 feet wide." One can also say that the house "looks smaller and farther away" than the window, and that does not contradict the other statement because now we mean that the amount ("θ′") by which directions
Degree (angle) this system. In most mathematical work beyond practical geometry, angles are typically measured in radians rather than degrees. This is for a variety of reasons; for example, the trigonometric functions have simpler and more "natural" properties when their arguments are expressed in radians. These considerations outweigh the convenient divisibility of the number 360. One complete turn (360°) is equal to 2"" radians, so 180° is equal to radians, or equivalently, the degree is a mathematical constant: 1° = . The turn (or revolution, full circle, full rotation, cycle) is used in technology and science. One turn is equal to 360°.