cos(a-b/2)=-1/9,sina(a/2-b)=2/3,且派>a>二分之派,0

来源:学生作业帮助网 编辑:六六作业网 时间:2025/01/19 10:23:10
cos(a-b/2)=-1/9,sina(a/2-b)=2/3,且派>a>二分之派,0cos(a-b/2)=-1/9,sina(a/2-b)=2/3,且派>a>二分之派,0cos(a-b/2)=-1/

cos(a-b/2)=-1/9,sina(a/2-b)=2/3,且派>a>二分之派,0
cos(a-b/2)=-1/9,sina(a/2-b)=2/3,且派>a>二分之派,0

cos(a-b/2)=-1/9,sina(a/2-b)=2/3,且派>a>二分之派,0
pi/2