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 angled triangles), and a variety of other topological relations such as spheres, in other branches, such as spherical trigonometry.

It specifically deals with the relationships between the sides and the angles of triangles; the trigonometric functions, and calculations based upon them.

Trigonometry Mobile Learning also available in Bahasa Indonesia

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