COS(X-Y)=( )

分类: 装表接电高级工单选题 发布时间: 2023-12-01 12:13 浏览量: 0

COS(X-Y)=( )

A.COSXCOSY-SINXSINY

B.COSXCOSY+SINXSINY

C.COSXSINX-SINYCOSY

D.COSXSINX+SINYCOSY

正确答案是B