3 |
π |
2 |
π |
2 |
π |
2 |
1-cos2ωx |
2 |
| ||
2 |
| ||
2 |
1 |
2 |
1 |
2 |
π |
6 |
1 |
2 |
π |
6 |
1 |
2 |
π |
2 |
π |
6 |
π |
2 |
π |
6 |
π |
3 |
π |
6 |
π |
3 |
π |
2 |
π |
6 |
π |
6 |
5π |
6 |
1 |
2 |
π |
6 |
π |
6 |
1 |
2 |
3 |
2 |
3 |
2 |
A.等腰直角三角形 | B.直角三角形 |
C.等腰三角形 | D.等边三角形 |
AB |
AC |
| ||
|
|
| ||
|
|
BC |
| ||
|
|
| ||
|
|
1 |
2 |
A.等边三角形 | B.直角三角形 |
C.等腰非等边三角形 | D.三边均不相等的三角形 |
A.锐角三角形 | B.等边三角形 | C.等腰三角形 | D.直角三角形 |
m |
3 |
n |
3 |
m |
n |
A.
| B.
| C.
| D.
|
a |
b |
π |
4 |
a |
b |
a |
b |
7 |
2 |
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