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Trigonometry
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Trigonometry (from Greek [T]rigōnon "triangle" + metron "measure"[1]), informally called trig, is a branch of mathematics that deals with triangles, particularly triangles in a plane where one angle of the triangle is 90 degrees (right angled triangles). It specifically deals with the relationships between the sides and the angles of triangles; the trigonometric functions, and calculations based upon them. The insights of trigonometry permeate other branches of geometry, such as the study of spheres using spherical trigonometry. Trigonometry has important applications in many branches of pure mathematics as well as of applied mathematics and, consequently remains applicable in natural sciences. Trigonometry is usually taught in secondary schools, often in a precalculus course.
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Trigonometry is the study of the relation between angles and sides within triangles. Using trigonometry you can find the length of an unknown side inside a right triangle if you know the length of one side and one angle. You can ... find the size of an unknown angle if you know the lengths of two of the sides of the right triangle. To do this, trigonometry uses right triangles which have equal angles and studies the relation between the length of the sides.
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Trigonometry has applications in both pure mathematics and in applied mathematics, where it is essential in many branches of science and technology. It is usually taught in secondary schools either as a separate course or as part of a precalculus course. Trigonometry is informally called “trig.”
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Trigonometry, a one-semester course, prepares students for further studies of mathematical topics in Calculus and Physics. The course begins by teaching students to measure angles in degrees and radians, arc lengths, and chords. Students then study the basic trigonometric functions, sine, cosine, and tangent, and their inverses as well as therelationships of these functions to chords and right triangles. In addition, students apply their study of trigonometric functions and identities to find angles of elevation and depression and solve right triangles. Students taking this course should have successfully completed oneyear of Algebra II.
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The Advanced Mathematics Instructional Software Series is for continuing Advanced Algebra 2 Trigonometry, and PreCalculus students as well as those beginning their study of calculus basics. This advanced math education series is ... appropriate for post high school algebra 2 trigonometry students working on their mathematics education or those needing advanced algebra help. This instructional software with precalculus help includes graphing calculator lessons scattered throughout the 7-program mathematics software series - keep up with today's math education usage of graphing calculators.
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Trigonometry was probably invented for the purposes of astronomy[2]. The origins of trigonometry can be traced to the civilizations of ancient Egypt, Mesopotamia and the Indus Valley, more than 4000 years ago. The common practice of measuring angles in degrees, minutes and seconds comes from the Babylonian's base sixty system of numeration.
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