Reference, Algebra, Trigonometry, Algebra & Trigonometry 

The 3rd edition of Cynthia Young's Algebra and Trigonometry brings together all the elements that have  allowed instructors and learners to successfully "bridge the gap"  between classroom instruction and independent homework by  overcoming common learning barriers and building confidence in  students' ability to do mathematics. Written in a clear, voice that speaks to students and mirrors how instructors communicate in lecture, Young's hallmark pedagogy enables students to become independent, successful learners. Varied exercise types and modeling projects keep the learning fresh and motivating. The seamless integration of Cynthia Young's Algebra and Trigonometry, 3rd  edition with WileyPLUS, a  research-based, online environment for effective teaching and  learning, continues Young's vision of building student confidence  in mathematics because it takes the guesswork out of studying by  providing them with a clear roadmap: what to do, how to do it, and  whether they did it right.WileyPLUS sold separately from text. - from Amzon