3 |
5 |
| ||
10 |
2 |
1 |
2sinαcosα+cos2α |
3 |
5 |
2
| ||
5 |
1-cos2A |
| ||
5 |
| ||
10 |
1-sin2C |
3
| ||
10 |
2
| ||
5 |
3
| ||
10 |
| ||
5 |
| ||
10 |
| ||
2 |
| ||
2 |
π |
4 |
π |
4 |
3π |
4 |
| ||
2 |
| ||
5 |
| ||
2 |
| ||
10 |
5 |
2 |
10 |
5 |
2 |
10 |
5 |
2 |
10 |
2 |
5 |
10 |
2 |
| ||
10 |
2 |
5 |
π |
4 |
π |
4 |
tanα+tan
| ||
1-tanαtan
|
1 |
3 |
1 |
2sinαcosα+cos2α |
cos2α+sin2α |
2sinαcosα+cos2α |
1+tan2α |
2tanα+1 |
2 |
3 |
A.直角三角形 | B.等腰直角三角形 |
C.等边三角形 | D.钝角三角形 |
π |
2 |
3 |
π |
4 |
π |
4 |
π |
2 |
x |
2 |
x |
2 |
2
| ||
5 |
x |
4 |
x |
4 |
3 |
x |
4 |
3 |
π |
3 |
| ||
5 |
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