Learn or Review Trigonometry: Essential Skills (Step-by-Step Math Tutorials) Paperback – Large Print, 10 Jun. 2015

I think I have pretty much all of chris’s books now. He is an excellent instructor and pretty much the reason I’m passing my hnc. Many thanks for the excellent resources!!!

It's been a while since I HAD to study trigonometry on a mathematics course. Coming back to the subject voluntarily meant I was under no pressure, so I could take my time. McMullen's book has made the experience enjoyable. My main disappointment was that he didn't introduce the "arc-" inverse trigonometric functions. They avoid the confusion that results from using the same symbol (the superscript [–1]) for inverse functions and for multiplicative reciprocal. Otherwise, I'd just like to thank Chris for a good book.