a |
b |
a |
3 |
4 |
a |
b |
b |
b |
q |
π |
2 |
p |
C |
2 |
2 |
3 |
b |
p |
b |
a |
b |
b |
a |
3π |
4 |
a |
b |
a |
b |
3π |
4 |
|
|
b |
b |
b |
q |
b |
2π |
3 |
2π |
3 |
b |
q |
C |
2 |
b |
q |
1+cos2A |
2 |
1+cos2C |
2 |
1 |
2 |
4π |
3 |
1 |
4 |
| ||
4 |
1 |
2 |
π |
3 |
π |
3 |
π |
3 |
5π |
3 |
π |
3 |
b |
p |
1-
|
| ||
2 |
a |
b |
a |
b |
a |
b |
A.2 | B.-2 | C.2或-2 | D.0 |
a |
b |
π |
3 |
a |
b |
a |
b |
c |
π |
3 |
a |
c |
3 |
8 |
π |
4 |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
AB |
3π |
2 |
AC |
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