👉 Trigonometry is a branch of mathematics that deals with the relationships between lengths and angles formed by lines, rays, and other curves. It uses the concept of triangles to solve problems in physics, engineering, and other fields. In trigonometric functions, these are used as an approximation or a formula for finding the sine, cosine, tangent, cotangent, secant, and cosecant of any angle between 0 and 90 degrees (or π radians) when the lengths and angles