تصنيف:حساب مثلثات

حساب المثلثات ( Trigonometry ؛ من اللغة اليونانية trigonon = ثلاث زوايا و metro = قياس) is a branch of mathematics dealing with angles, triangles and trigonometric functions such as sine, cosine and tangent. It has some relationship to geometry, though there is disagreement on exactly what that relationship is; for some, trigonometry is just a subtopic of geometry.