a |
a |
b |
b |
b |
A.(2,
| B.(2,-
| C.(2,-
| D.(-2,
|
b |
a |
b |
a |
b |
3 |
2 |
b |
3 |
2 |
OC |
OA |
OB |
A.(x-1)2+(y-2)2=5 | B.3x+2y-11=0 |
C.2x-y=0 | D.x+2y-5=0 |
a |
b |
c |
a |
b |
π |
3 |
a |
c |
AB |
AC |
AB |
BC |
AD |
CB |
AE |
CB |
a |
3 |
2 |
3 |
2 |
b |
x |
2 |
x |
2 |
c |
x |
2 |
x |
2 |
π |
2 |
π |
2 |
a |
b |
a |
c |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
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