a |
b |
3 |
a |
b |
a |
b |
a |
b |
a |
b |
3 |
| ||
3 |
π |
6 |
π |
6 |
a |
b |
a |
b |
(sinθ-
|
13-2(
|
3 |
3 |
3 |
3 |
3 |
3 |
3 |
3 |
3 |
3 |
13 - 2(3sinθ+3cosθ) |
3 |
3 |
a |
b |
3 |
a |
b |
n |
a |
b |
a |
b |
n |
v |
n |
v |
1 |
3 |
AB |
a |
AC |
b |
AD |
A.
| B.
| C.
| D.
|
A.-2 | B.0 | C.1 | D.2 |
a |
b |
a |
b |
a |
b |
A.(3,-1) | B.(-3,1) | C.(-2,-1) | D.(2,1) |
a |
3 |
2 |
| ||
2 |
b |
| ||
2 |
a |
b |
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