问题
选择题
log2sin
|
答案
log2sin
+log2cosπ 12 π 12
=log2(sin
cosπ 12
)π 12
=log2
sin1 2 π 6
=log2
=-2．1 4
故选B．
搜题请搜索小程序“爱下问搜题”
log2sin
|
log2sin
+log2cosπ 12 π 12
=log2(sin
cosπ 12
)π 12
=log2
sin1 2 π 6
=log2
=-2．1 4
故选B．