This vintage book from Cleveland Institute of Electronics is packed with valuable information for anyone looking to improve their skills in the subject of electronics. With a focus on auto-programmed lessons, this study guide offers a comprehensive review of trigonometry in an easy-to-understand format. The publication is in English and was published by the National Accredited School Union in the United States.

The book is perfect for beginners, intermediates, and advanced students who are looking to expand their knowledge in the field of electronics. It's part of a series of study guides that offers a detailed breakdown of the subject area. This book is a must-have for anyone looking to improve their skills and knowledge in electronics, and it's sure to be a valuable addition to any book collection.