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Trigonometry – Basic Concept and Function
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The word trigonometry originates from the Greek words trigonon, which means triangle, and metrein, which means to measure. It began as a branch of geometry and was utilized extensively by early Greek mathematicians to determine unknown distances. The general principles of trigonometry were formulated by Greek astronomer, Hipparchus of Nicaea (c. 166–125 BC), who is generally credited as the founder of trigonometry.
Trigonometry is a branch of mathematics which deals with angles, triangles and trigonometric functions such as sine, cosine and tangent.
Trigonometry also deals with the ratios between the sides of a right triangle with reference to either acute angle (trigonometric functions), the relations between these ratios, and the application of these facts in finding the unknown sides or angles of any triangle, as in surveying, navigation, engineering, etc.
Trigonometric functions are important in the study of triangles and modeling periodic phenomena, among many other applications.
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