π |
2 |
π |
2 |
π |
12 |
π |
3 |
π |
6 |
π |
12 |
π |
2 |
π |
3 |
π |
2 |
π |
2 |
π |
3 |
π |
3 |
π |
3 |
π |
3 |
π |
3 |
π |
3 |
π |
3 |
π |
3 |
π |
2 |
π |
3 |
π |
2 |
5π |
12 |
π |
12 |
π |
3 |
5π |
12 |
π |
12 |
5π |
12 |
π |
12 |
5π |
12 |
π |
12 |
π |
6 |
5π |
12 |
π |
12 |
π |
6 |
A+B |
2 |
A.tanAcotB=1 | B.
| ||
C.sin2A+cos2B=1 | D.cos2A+cos2B=sin2C |
π |
2 |
π |
2 |
π |
12 |
π |
3 |
π |
6 |
3 |
π |
2 |
π |
2 |
A.f(x)的最小正周期为2π,且在(0,π)上为单调递增函数 | ||
B.f(x)的最小正周期为2π,且在(0,π)上为单调递减函数 | ||
C.f(x)的最小正周期为π,且在(0,
| ||
D.f(x)的最小正周期为π,且在(0,
|
a |
2 |
sinα |
1+cosα |
A.
| B.α∈(2kπ,π+2kπ)(k∈Z) | ||
C.sinα•cosα>0 | D.以上都不对 |
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