Trigonometry is a branch of mathematics that focuses on the study of triangles and the relationships between their sides and angles.
It is based on trigonometric functions, such as sine, cosine, and tangent, which allow for the calculation of unknown lengths and angles in right triangles.
Trigonometry has applications in solving problems related to navigation, astronomy, physics, engineering, and other disciplines.
It is also essential for understanding periodic and wave phenomena, such as simple harmonic motion and sound waves.