a |
b |
5π |
6 |
π |
2 |
a |
b |
a |
b |
1 |
3 |
1 |
7 |
π |
2 |
5π |
6 |
π |
2 |
|
|
π |
2 |
5π |
6 |
1 |
2 |
π |
2 |
π |
2 |
a |
b |
1 |
3 |
1-cos2(α-β) |
2
| ||
3 |
1 |
7 |
π |
2 |
1-sin2α |
4
| ||
7 |
4
| ||
7 |
1 |
3 |
1 |
7 |
2
| ||
3 |
4
| ||||
21 |
1 |
2 |
3 |
π |
4 |
π |
4 |
A.0 | B.
| C.
| D.1 |
π |
2 |
3 |
5 |
3 |
5 |
A.-1 | B.-1或-
| C.-
| D.±
|
| ||
2 |
A.a<b<c | B.b<a<c | C.c<b<a | D.a<c<b |
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