A |
2 |
A |
2 |
A |
2 |
A |
2 |
5π |
12 |
6 |
A |
2 |
A |
2 |
A |
2 |
A |
2 |
2 |
π |
4 |
π |
4 |
π |
4 |
3π |
4 |
π |
4 |
π |
2 |
3π |
4 |
2 |
2 |
π |
4 |
π |
4 |
π |
4 |
π |
4 |
3π |
4 |
π |
4 |
π |
4 |
5π |
12 |
7π |
12 |
π |
3 |
a |
sinA |
b |
sinB |
asinB |
sinA |
| ||||
sin
|
A.3 | B.3
| C.6 | D.6
|
A.5 | B.10 | C.5
| D.5
|
6 |
A.1:
| B.1:2:4 | C.2:3:4 | D.1:
|
A.a=7,b=14,A=30°,有两解 |
B.a=30,b=25,A=150°,有一解 |
C.a=6,b=9,A=45°,有两解 |
D.a=9,b=10,A=60°,无解 |
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