a |
b |
|a| |
|b| |
a |
b |
a |
a |
b |
A.
| B.
| C.
| D.
|
|a| |
|b| |
a |
b |
a |
a |
b |
a |
a |
b |
a |
b |
1 |
2 |
a |
b |
a |
b |
2π |
3 |
b |
a |
3 |
a |
b |
a |
b |
A.300 | B.600 | C.1200 | D.1500 |
. |
AB |
. |
c |
. |
BC |
. |
a |
. |
CA |
. |
b |
. |
a |
. |
b |
. |
a |
. |
b |
. |
a |
. |
b |
. |
b |
. |
c |
. |
c |
. |
a |
. |
b |
. |
c |
A.1 | B.2 | C.3 | D.4 |
a |
b |
a |
b |
b |
a |
a |
b |
b |
a |
b |
a |
b |
a |
A.12 | B.6 | C.4 | D.2 |
OA |
OB |
π |
3 |
OA |
OB |
OA |
OM |
A.
| B.2
| C.
| D.2
|
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