Students need the best teacher, so you need examples, because examples are the best
teacher. All the examples in this book are fully worked, and help you do math better.
And this book is about a math idea called trigonometry. Why trigonometry though?
That's primarily because we often get to work with angles not only doing geometry but
doing algebra, too. Doing high school math or college math, we can hardly avoid or stay
away from algebra. And doing geometry, too, we often get to do algebra on expressions
with angles. And doing such algebra, we can say that we do trig-algebra.
And next, we need to do trigonometry if we have to work with vectors and many other
objects that have to do with angles. Working with such objects, we often need to find
objects called components, which have directions or angles. Finding such components,
we want to use some tools in trigonometry. And the tools are called trigonometric-ratios,
often just called trig-ratios, for short.
So doing trigonometry, we get to use trig-ratios called sines, cosines, etc., together with
a bit bigger tools called trig-identities, and some rules or formulas. So in this book, you
get to know what those tools are and what they are about. That is to say that you will get
to know how those tools work, what you can do with them, and how to work with them.
Specifically, you will get to learn, for instance, how the trig-ratio called the sine is made,
what it is about, and how to use it. More specifically, you will see why you have to
multiply by the sine, and what you get multiplying by it.
And of course, you will get to learn those important tools called trig-identities and the
formulas called the Sine Rule and the Cosine Rule. Besides, you will get to see and will
be familiar with some special tools called trig-functions.
And you will get them all through examples, that is, those tools will get explained with
examples fully worked and detailed. Also, following steps to the solution in each
example, you will be more familiar with the tools and the math ideas.
And you will get to strengthen your skill of algebra. So doing problems as well as
learning ideas in math, you can do better and faster so that your math can run not only
properly but fast enough, too.
And of course, I can go more of blah-blah-blah, and anyway, end up with saying that
this book is the best ever, and is so great to buy. So what is good, and how good is it?
What author in the world is saying that his or her own book is just so-so or bad? So you
may want to take a look at the actual book, and read some pages in it. Where then, is the book?
You can look at some sample, which is a good amount of excerpt, and you can get it
downloaded using the link as follows:
https://www.createspace.com/Preview/1099145
The link above belongs to CreateSpace, which is part of the Amazon group of
companies. So no worry about getting something bad.
May your math run very well.
Seong R. Kim
B.S. Math. Michigan Tech. Univ. M.S. Math. Rensselaer Polytechnic Institute
