3 |
π |
2 |
a |
2 |
π |
6 |
6 |
5 |
3 |
3 |
1-cos2ωx |
2 |
π |
6 |
2π |
2ω |
π |
6 |
π |
2 |
π |
6 |
π |
6 |
7π |
6 |
π |
6 |
a |
2 |
π |
6 |
π |
6 |
6 |
5 |
π |
6 |
3 |
5 |
π |
6 |
4 |
5 |
π |
6 |
π |
6 |
π |
6 |
π |
6 |
π |
6 |
π |
6 |
4 |
5 |
| ||
2 |
3 |
5 |
1 |
2 |
4
| ||
10 |
A.能组成直角三角形 | B.能组成锐角三角形 |
C.能组成钝角三角形 | D.不能组成三角形 |
A.
| B.-
| C.
| D.-
|
x2 |
16 |
y2 |
12 |
A.锐角三角形 | B.直角三角形 |
C.钝角三角形 | D.等腰直角三角形 |
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