m |
3 |
n |
m |
n |
A |
2 |
m |
n |
m |
3 |
n |
3 |
3 |
3 |
3 |
π |
6 |
2π |
2 |
A |
2 |
π |
6 |
π |
6 |
π |
6 |
π |
6 |
π |
3 |
π |
3 |
b2+c2-4 |
2bc |
b+c |
2 |
| ||
2 |
A.2sin15°cos15° | B.sin215°-cos215° |
C.1-2sin215° | D.sin215°+cos215° |
3 |
π |
2 |
AB |
OC |
AC |
BD |
OC |
CE |
π |
2 |
1 |
3 |
θ |
2 |
1+sin2θ |
1+cos2θ |
A.1+
| B.2
| C.
| D.
|
2 |
π |
4 |
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