的值在区间
[ ]
|
A .(43,44] |
B .(44,45] |
|
C .(45,46] |
D .[46,47] |
已知
[ ]
|
A .sin |
B .cos |
|
C .-cos |
D .±cos |
的值在区间
[ ]
|
A .(43,44] |
B .(44,45] |
|
C .(45,46] |
D .[46,47] |
已知
[ ]
|
A .sin |
B .cos |
|
C .-cos |
D .±cos |