1+tan150 |
1-tan150 |
1+tan150 |
1-tan150 |
1+
| ||
1-
|
sin15°+cos15° |
cos15°-sin15° |
(sin15°+cos15°)2 |
(cos15°-sin15°)(cos15°+sin15°) |
1+sin30° |
cos30° |
| ||||
|
3 |
3 |
π |
4 |
π |
4 |
π |
6 |
π |
6 |
3 |
π |
6 |
π |
6 |
A.
| B.
| C.2
| D.
|
3 |
5 |
4 |
5 |
π |
2 |
π |
4 |
1 |
2 |
sin2α-2cos2α |
1-tanα |
1 |
7 |
π |
2 |
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