设M=cos20°×cos40°×cos60°×cos80°×cos100°×cos120°×cos140°×cos160°,求证:M=1/256

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/28 06:05:16
设M=cos20°×cos40°×cos60°×cos80°×cos100°×cos120°×cos140°×cos160°,求证:M=1/256

设M=cos20°×cos40°×cos60°×cos80°×cos100°×cos120°×cos140°×cos160°,求证:M=1/256
设M=cos20°×cos40°×cos60°×cos80°×cos100°×cos120°×cos140°×cos160°,求证:M=1/256

设M=cos20°×cos40°×cos60°×cos80°×cos100°×cos120°×cos140°×cos160°,求证:M=1/256