Szczegóły do uzgodnienia:
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 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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