sin65°+sin15°sin10° |
sin25°-cos15°cos80° |
sin65°+sin15°sin10° |
sin25°-cos15°cos80° |
cos(10°+15°)+sin15°sin10° |
sin(15°+10°)-cos15°sin10° |
cos10°cos15° |
sin15°cos10° |
cos15° |
sin15° |
cos(45°-30°) |
sin(45°-30°) |
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|
| ||||
|
3 |
π |
3 |
π |
12 |
3 |
π |
6 |
A.①② | B.②③ | C.②④ | D.③④ |
5 |
6 |
A.
| B.
| C.-
| D.-
|
π |
4 |
5π |
12 |
π |
6 |
m |
. |
n |
m |
. |
n |
π |
6 |
π |
2 |
π |
3 |
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