This is an excellent book from which to study and understand the maths of trigometry.
There are questions that the author poses and answers thus showing how the student
can answer questions for himself. In addition he poses questions that the student has
to answer for himself. At the back of the book the correct answers are provided and
this means the student can check if he his answers are correct or incorrect. If incorrect he can
do the maths again until he reaches the correct answers. By doing this he learns to
eliminate making mistakes and thus embed in his mind how to do the maths correctly.
It is a pity that this book is no longer in print. However,… Read more