Trigonometry Essentials Practice Workbook with Answers Paperback – Big Book, 18 May 2012

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Covers a lot. Good practice pages. I really needed a good explanation of half-angle, double-angle, etc. type formulas. Good explanations are hard to find on the Internet (or at school, sadly). The last couple chapters were really good in this regard. I'd highly recommend.

In retirement I decided to revisit Maths bur didn’t realise how out of touch I was. One are was trigonometry. This book I found so easy to read, and right to the point. My advice: don’t skip the exercises! You may think you get it but they really put you to the test. I found the introduction to each section was so easy to follow, and (provided to read it properly) really got you to where you needed to be. Highly recommend this to anybody

Muito útil e bem explicado coisas que não lembramos ou aprendemos. Recomendo para quem precisa voltar a estudar ou iniciantes.

A good quality workbook. Well defined processes, with graduating order of problems such that the reader is well prepared for the next step. If learning from scratch, students will realize much greater success if making sure they clearly understand the each chapter before moving on.This understanding of trig functions given here makes memorization obsolete, as you understand the logic behind each determination. I am so glad to save this time of memorization and just have a clarity of understanding the unit circle, signs of each sin/cos/tan per quadrant, without wasting any time.Even the typos are so few that when you find them, its rather apparent, and a fun surprise.P14 answer key for problem 11 is incorrect,P 32 has a typo in the additional terms csc, sec, cotp 96 example 2 defines an angle of 210º in quadrant 2, which is actually in quadrant 3 and will change the sign of the answerThere may be other typos, but that's all I found. It would be nice if the publisher listed on a website so purchasers can correct them before attempting to learn trigonometry from scratch. Its nice for all navigators to receive updates whenever a buoy or an island is incorrectly described on a chart, and so too would this greatly serve the student navigating trigonometry.Overall a good learning book, just shy of greatness. Has helped me a ton preparing to test out of trig into precalculus and save a whole semester for crucial prerequisites. Thank you author! If anyone knows of any good books for calculus and precalculus, let me know.

From being frightened of trig because my teachers didn't explain it to this level of conciseness and care. This book has all of the trig fundamentals you need to go into further studies. Great stepping stone. Includes great quadrants explanations, conversion, sin, cos, trig identities, combining algebraic with trig problems. My most memorable problems were what some might find tedious of identifying (but I am greatful for)which quadrant the angles lies in, seriously this ability to recognize the correct quadrant applies over and over to other subjects such as physics first year, second year etc.