Trigonometric functions: The trigonometric functions most widely used

The trigonometric functions most widely used in modern mathematics are the sine, the cosine, and the tangent functions. Their reciprocals are respectively the cosecant, the secant, and the cotangent functions, which are less used. Trigonometric functions are also known as Circular Functions can be simply defined as the functions of an angle of a triangle. It means that the relationship between the angles and sides of a triangle are given by these trig functions. The basic trigonometric functions are sine, cosine, tangent, cotangent, secant and cosecant. Also, read trigonometric identities here. Basic Trigonometric Ratios There are 6 ratios in trigonometry. These are referred to as Trigonometric Functions. Below is the list of trigonometric ratios, including sine, cosine, secant, cosecant, tangent, and cotangent. Learn about the six trigonometric functions: sine, cosine, tangent, cosecant, secant, and cotangent. Find out how to define them in terms of right triangles and unit circles, and how to use them to find angles and lengths.