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Trigonometry (from Greek trig┼Źnon, "triangle" and metron, "measure") is a branch of mathematics that studies relationships between side lengths and angles of triangles. The field emerged in the Hellenistic world during the 3rd century BC from applications of geometry to astronomical studies. The Greeks focused on the calculation of chords, while mathematicians in India created the earliest-known tables of values for trigonometric ratios (also called trigonometric functions) such as sine.

Throughout history, trigonometry has been applied in areas such as geodesy, surveying, celestial mechanics, and navigation.

Calculate trigonometric values

Trigonometry Formulas

Radian and degree

Angles value given in radians

Trigonometric value of the angles in degrees

Calculate the sine of an angle
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