Hello,

Some of the best books of Maths which you can refer for JEE Mains are:

• Objective Mathematics by RD Sharma- It will complete all your basics and will provide with every type of problems.
• Differential Calculus by Amit M Agarwal (Arihant Publications) - this is the best book for calculus
• Plane trignometry by SL Loney- It will cover all your portion of trignometry
• The Elements Of Coordinate Geometry by S L Loney - This is for the portion of coordinate geometry
• Complete mathematics for JEE Main TMH - This book is for the complete explanation of all the topics.

Hope, it helps!