RD Sharma Solutions for Class 10 Chapter 11 "Trigonometric Identities" have prepared by our Praadis subject matter experts very carefully. In mathematics, trigonometric identities are equalities that involve trigonometric functions and are true for every value of the occurring variables, where both sides of the equality are defined. Geometrically, these are identities involving certain functions of one or more angles. In this chapter, we will establish some fundamental trigonometric identities and use them to obtain some more identities.