a |
x |
3 |
3 |
x |
3 |
b |
a |
b |
x |
3 |
x |
3 |
x |
3 |
3 |
x |
3 |
1 |
2 |
2x |
3 |
| ||
2 |
2x |
3 |
1 |
2 |
2x |
3 |
| ||
2 |
2x |
3 |
| ||
2 |
2x |
3 |
π |
3 |
| ||
2 |
2x |
3 |
π |
3 |
2x |
3 |
π |
3 |
3k-1 |
2 |
3k-1 |
2 |
| ||
2 |
a2+c2-b2 |
2ac |
a2+c2-ac |
2ac |
2ac-ac |
2ac |
1 |
2 |
1 |
2 |
π |
3 |
π |
3 |
2x |
3 |
π |
3 |
5π |
9 |
π |
3 |
π |
2 |
5π |
9 |
π |
2 |
π |
3 |
2x |
3 |
π |
3 |
3 |
2x |
3 |
π |
3 |
| ||
2 |
| ||
2 |
π |
3 |
3 |
| ||
2 |
π |
3 |
A.
| B.
| C.
| D.π |
3 |
π |
4 |
3 |
π |
2 |
A.a<b | B.a≤b | C.b<a | D.b≤a |
3 |
4 |
1 |
tanA |
1 |
tanC |
BA |
BC |
3 |
2 |
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