π |
2 |
PM |
PN |
1 |
2 |
π |
2 |
π |
6 |
π |
6 |
1 |
3 |
1 |
6 |
5 |
6 |
|
| ||
2 |
|
| ||
2 |
17 |
4 |
17 |
4 |
| ||
2 |
| ||
2 |
PM |
PN |
PM |
PN |
15 |
17 |
a |
b |
c |
0 |
a |
c |
b |
3 |
a |
a |
b |
A.
| B.
| C.-
| D.-
|
a |
b |
a |
b |
b |
A.30° | B.60° | C.120° | D.150° |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
A.2 | B.4 | C.2
| D.8 |
a |
b |
c |
a |
c |
b |
c |
c |
c |
a |
c |
b |
c |
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