Functions sine, cosine, tangent, cotangent, secant and cosecant of angle A of any given triangle ABC are called trigonometrical functions or trigonometrical ratios.

## Introduction to Trigonometry, Angles and Their Measurement

Introduction: Hello there maths lovers, in this post today you all will learn about the trigonometry and its definition along with angles, its types and different measurement systems. Please feel free comment your suggestions and questions down in the comments below. Happy Maths to You. Trigonometry: The word trigonometry is taken from Greek words ‘trigon’ […]

## Understanding Trigonometric Ratios of Angles in Each Quadrant

In this lesson, we will learn how to get the trigonometric ratios of angles equal to and more than 90° and what relation exists between sine, cosine and tangent of angles in each quadrant.

## Basic Trigonometric Ratios With Application to Triangles

Understanding how trigonometric ratios are derived and how they help solve a triangle including finding area of a triangle.

## Trigonometric Solutions of a Triangle Examples

Solution of triangles is the term for solving the main trigonometric problem of finding the parameters of a triangle that include angle and length of the sides.