米勒(Johannes Miiller 1436-1476),德国数学家,对三角学做出了巨大贡献,是斐波那契以来欧洲最有影响的数学家.米勒1533年发表的名著《三角全书》是使三角学在欧洲取得独立地位的第一部系统性著作.该书共分五册,前两册讲平面三角,后三册讲球面三角.此外,他还讨论到一个新颖的极值问题:天花板挂一垂直的杆,长10尺,下端离地面4尺,在地面上找一点(或这点的轨迹)使对杆的张角最大(即可见角最大). Johannes Miiller (1436-1476), a German mathematician who made a great contribution to trigonometry, is the most influential mathematician in Europe since Fibonacci. The famous book The Triangle, published in 1533 by Miller, The first systematic work on trigonometry in Europe to achieve its independence was made in five volumes, the first two volumes presenting plane triangles and the second three speaking spherical triangles. In addition, he discussed a novel extreme problem: the ceiling Hang a vertical bar, 10 feet long and 4 feet down from the ground. Find a point on the ground (or trace of this point) to maximize the opening of the pole (ie, the maximum angle of view).