sin75度怎么算
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/04/28 18:21:39
sin75度怎么算
sin75度 = sin(45度+30度)
= 2^(1/2) / 2 * 3^(1/2)/2 + 2^(1/2) * 1/2
= (6^(1/2) + 2^(1/2))/4
= 2^(1/2) / 2 * 3^(1/2)/2 + 2^(1/2) * 1/2
= (6^(1/2) + 2^(1/2))/4