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By Newsweek Editors
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LEARNING TRIGOnometry usually means dogging through incomprehensible textbooks to understand all those sine and cosine rarios. Boxer Math's Trigonometry CD-ROM ($50, 800-736-2824) changes all that. It uses real-world examples and nice graphics in 11 gentle lessons that won't give high schoolers the urge to major in English. The CD is now available for Windows; a Mac version is planned for next year.
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