Solving Trig. Equations and Trig. Inequalities
Ngo, Nghia
This booklet also introduces an innovative approach to solve complex trig inequalities and systems of trig inequalities by using graphing calculators.The author' performances on trig subjects are incredible. With about 3 thousands answers to trig homework questions, he may have helped more than 10 millions of students who have searched into his posted answers on the website "Nghi N on Socratic.org" in Google Search.