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TrigonometryTrigonometry is a branch of mathematics which deals with triangles, particularly triangles in a plane where one angle of the triangle is 90 degrees (right triangles). Triangles on a sphere are also studied, in spherical trigonometry. Trigonometry specifically deals with the relationships between the sides and the angles of triangles, that is, the trigonometric functions, and with calculations based on these functions.
Trigonometry has important applications in many branches of pure mathematics as well as of applied mathematics and, consequently, much of science and precalculus. For example, the robotic arm on the International Space Station is operated by controlling the angles of its joints. Calculating the final position of the astronaut at the end of the arm requires repeated use of the trigonometric functions of those angles. Related Science NewsEncyclopedia ArticlesFresh Mesh: A New Route To Smaller 3-D Files (June 17, 2004) -- A University of Southern California computer scientist has created a powerful and elegant algorithm to compress the large and ungainly files that represent 3-D shapes used in animations, video games ... > full story The Trick Is In The Triangles: Speeding Up 3-D Computer Models (February 25, 1998) -- A Johns Hopkins computer scienctist has developed software that dramatically increases the speed at which 3-D computer graphics can be put in motion on-screen. 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The research shows a stable structure for a molecular sphere of 80 ... > full story "The Internet" Is The Theme For Mathematics Awareness Week (April 1, 1997) -- Mathematics and the Internet is the theme for Mathematics Awareness Week 1997 which will be observed nationwide from April 20 - ... > full story Trigonometry -- Trigonometry is a branch of mathematics which deals with triangles, particularly triangles in a plane where one angle of the triangle is 90 degrees (right triangles). Triangles on a sphere are also ... > full article Hypotenuse of a right triangle -- The hypotenuse of a right triangle is the triangle's longest side; the side opposite the right angle. The length of the hypotenuse of a right triangle can be found using the Pythagorean theorem, ... > full article Triangle -- A triangle is one of the basic shapes of geometry: a polygon with three vertices and three sides which are straight line segments. 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