Good book recommendations on trigonometry I need to find a good book on trigonometry, I was using trigonometry demystified but I got sad when I read this line:

Now that you know how the circular functions are defined, you might wonder how the values are calculated. The answer: with an electronic calculator!

I know a book which seems to be really good: Loney's Plane Trigonometry, I'm just not sure if the book is up to date. 

For those who understand Russian, the book "Спецыальный курс тригонометрии" by S. I. Novoselov ("Special course on Trigonometry") will be of a great value, alongside other wonderful books mentioned here.
