In mathematics, the trigonometric functions (also called circular functions) are functions of an angle. They are used to relate the angles of a triangle to the lengths of the sides of a triangle. Trigonometric functions are important in the study of triangles and modeling periodic phenomena, among many other applications. The most familiar trigonometric functions are the sine, cosine, and tangent. The sine function takes an angle and tells the length of the y-component (rise) of that triangle.
U.S. Route 24 is one of the original United States highways of 1926. It originally ran from Pontiac, Michigan, in the east to Kansas City, Missouri, in the west. Today, the highway's northern terminus is west of Clarkston, Michigan, at an intersection with I-75 and its western terminus is near Minturn, Colorado at an intersection with I-70. The transition from north–south to east–west signage is in Toledo, Ohio.