RD Sharma Solutions for Class 10 Chapter 10 “Trigonometric Ratios”- It is defined as the values of all the trigonometric function based on the value of the ratio of sides in a right-angled triangle. The ratios of sides of a right-angled triangle to any of its acute angles are known as the trigonometric ratios of that particular angle. In trigonometry, trigonometric ratios are derived from the sides of a right-angled triangle. There are six ratios, such as sine, cosine, tangent, cotangent, cosecant, and secant. You will learn here to build a trigonometry table for these ratios for some particular angles, such as 0 °, 30 °, 45 °, 60 °, 90°. There are many trigonometry formulas and trigonometric identities, which are used to solve complex equations in geometry. Here, the concept of ratios of trigonometry is covered along with its definitions and applications. Trigonometry is the science of measuring triangles. Further, in this chapter, you will learn about the trigonometric ratios and their relations between them. The trigonometric ratios of some specific angles are also discussed.