It has been established over time that the "Classic Text Series" is the most popular concept-building resource for learning mathematics. It is a collection of books produced by the most well-known mathematicians of their time. These timeless classics are presented through the imprints of Arihant. Since 1800, SL LONELY has been regarded as Ramanujan's primary mathematical influence. The new edition of "Plane Trigonometry" covers the latest presentation of the subject's intricate ideas. This comprehensive study manual, which was created in accordance with the most recent curriculum, contains thorough theories, formulas for the Principles of Calculus, and a good number of illustrations to help students grasp the ideas.