The Humongous Book of Trigonometry Problems: 750 Trigonometry Problems with Comprehensive Solutions for All Major Topics (Humongous Books)
Kindle电子书
US$11.99 was: US$22.99
W. Michael Kelley started as a high school math instructor in his hometown, and that’s when he got the opportunity to write his first book. Since then, he’s written a bunch of other books and worked a lot of other jobs supporting teaching and learning. He lives in southern Maryland with his stunning wife, his bald dog, and the three kids who are his proudest achievements. His life goal is to make math hurt less.
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