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Trigonometry Reviews

Customer Rating:
Summary: Huge Disappointment!!
Comment: I usually buy books that have good feedback because it has served me well in the past, but unfortunately this isn't the case with this book. The author couldn't have picked a more perplexing way to explain this subject. Yes it's filled with problems, but what good are the problems if you don't have the correct answer nor do you have an explanation on how to solve them. Don't let the wonderful reviews fool you. If you still think it's worth a try, then I advise for you to look at a copy before buying.

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Customer Rating:
Summary: Trig-Gelfand
Comment: Books
This is a very good Trig book. However, there was no offer of an answer book. I will teach a course using this book. Can you give me a site where I can get an answer book? With the answer book I could give 5 stars.

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Customer Rating:
Summary: Trigonometry is all about triangles!
Comment: So I bought this book for some Trig class I signed up for at the last minute. I didn't know what to expect. I skimmed through the book and saw triangles everywhere. I figured that a few triangles should not be so difficult to figure out- the measurements and all. It's a skimpy little book, but there sure is a lot of info crammed in there. I studied hard. I had dreams of triangles floating around, suspended in the air. I could not get triangles off my brain. Day and night- triangles and more triangles. I think I just got sick of looking at triangles come final exam, because I went out and got hammered to get them off my mind just hours before the exam. I'm not BSing you either. To make a long story short, I took the exam while under the influence of alcohol. It worked, the booze got the triangles off my brain, but the timing was not good because I had to think about triangles in order to finish the darn exam. I had a perfect GPA until that Trig exam. I did manage to pull off an A- on the exam, which surprised the heck outta me. Now I try to not let triangles get the best of me anymore. I'm angry at them, but at the same time I understand them. Triangles deserve respect. Don't be boozin' before an exam. This was a good book and I recommend it highly. But some advice first; don't be square and let the triangles shape your mind- think outside the box and you'll do fine, circle the correct answers if you can, and come at problems from different angles.

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Customer Rating:
Summary: Pedestrian perspective on a universal vision
Comment: Don't waste your time. It's books of this sort that bring disinterest and sleep to the eyes of teenaged minds. To think that the work of Euclid (now freely available on Google Books) has degenerated to this third-hand rendition of the foundation of natural existence is awe-inspiring. Like all other books in this class, the discussion never connects the reader to the idea that the symbolization of the relationships of the orientations of the boundaries of certain forms are universal and utterly fundamental. Instead, we get tossed a few line drawings, graphs, number types mixed with graphic symbols, and condescending ministration on whether we got it right or wrong. The author's idea of connecting trigonometry to other fields of math is to state profound meanings like "trigonometry is a part of precalculus, and is related to other precalculus topics". In one exercise, the author commands: "Using a protractor, measure the angles of the triangle as accurately as you can. Do your measurements add up to 180 degrees? Let us now turn our attention to circles." The missing parts of the discussion being: 1) Who invented the protractor? 2) Why do protractors always work, or do they? 3) Why bother measuring with a cheesy plastic nomograph when its the RELATIONSHIP that's of primary importance? 4) Should I be all OCD about measuring accurately because that's what Trigonometry is all about? 5) My measurements don't entirely add up to 180, why is that? 6) Why 180 degrees, and not 37 lurkmons, and can't I make up my own system of relationships? 7) Then what makes the relationship of orientation of certain extensions or boundaries universal? 8) How is it possible to add numbers to shapes, or did you just miss out on presenting to me a massive chunk of the development of the arithmetization of geometric thought? 9) Why are we doing all this? Is there a progression of thought process involved or should I just keep memorizing an apparently jumbled collection of methods extracted from all modes of mathematical approach at face value? 10) Is this a thinking sort of course? Or do I just follow instructions like a drone? Naaah... Let's just skip to circles. No wonder people despise how math is taught, and also, the teacher.

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Customer Rating:
Summary: Many Exercises, No Solutions
Comment: The book is well written with clear descriptions, many examples and plenty of diagrams. The book also contains a large number of exercises and therein lies my gripe. There are absolutely NO SOLUTIONS. For self study this is of little use and I have had to revert to the Schaum's Outline for Trigonometry for practice. Two stars is perhaps a bit harsh but I think it important that potential purchasers notice that no solutions are provided for any of the exercises.

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