a |
3 |
b |
a |
b |
b |
a |
3 |
b |
a |
b |
b |
3 |
3 |
5
| ||
2 |
1-cos2x |
2 |
5
| ||
2 |
π |
6 |
7 |
2 |
2π |
2 |
π |
6 |
17 |
2 |
2π |
3 |
3 |
2 |
π |
2 |
π |
6 |
π |
2 |
π |
3 |
π |
6 |
π |
3 |
π |
6 |
π |
6 |
2π |
3 |
7π |
6 |
2π |
3 |
π |
6 |
2π |
3 |
a |
2 |
b |
π |
4 |
a |
b |
π |
4 |
π |
2 |
a |
3 |
b |
a |
b |
π |
6 |
π |
4 |
A.锐角三角形 | B.直角三角形 | C.钝角三角形 | D.无法判定 |
π |
6 |
π |
2 |
A.2,
| B.
| C.2,1-
| D.1+
|
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