A.sin250°<sin260° | B.cos
| ||||||||
C.sin(-
| D.sin
|
15π |
8 |
π |
8 |
π |
8 |
14π |
9 |
4π |
9 |
π |
8 |
4π |
9 |
π |
2 |
π |
2 |
15π |
8 |
14π |
9 |
54π |
7 |
2π |
7 |
2π |
7 |
63π |
8 |
π |
8 |
π |
8 |
π |
8 |
2π |
7 |
π |
2 |
π |
2 |
54π |
7 |
63π |
8 |
3π |
7 |
π |
5 |
π |
2 |
A.y=sin(π-x) | B.y=sin(
| C.y=sin2x | D.y=cos2x |
x |
2 |
π |
6 |
A.{x|x=4kπ-
| B.{x|x=4kπ+
| ||||
C.{x|x=4kπ-
| D.{x|x=4kπ+
|
π |
3 |
π |
2 |
A.[1,2] | B.[-1,
| C.(1,2) | D.[1,
|
π |
6 |
1 |
3 |
2π |
3 |
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