Anup Kumar SenAnup Kumar Sen is a graduate Mechanical Engineer with over 45 years of service in the Government of India and nearly 10 years of experience in private organizations after retirement. Since 2020, he has been engaged in writing academic books. Six of hs books, covering Algebra, Trigonometry, Coordinate Geometry, and Statistics for students from Class 7 to Class 12, have been published and are widely circulated in India and abroad. His latest book is designed for engineering students studying Hydraulics and related machines. Through his work, he aims to support and benefit students across India and around the world. Read More Read Less