kπ |
2 |
x |
2 |
1 |
2 |
a2+b2 |
b |
a |
1 |
2 |
π |
6 |
π |
3 |
11π |
6 |
| ||
2 |
| ||
2 |
π |
3 |
π |
2 |
π |
6 |
2kπ |
2 |
π |
2 |
(2k+1)π |
2 |
2kπ |
2 |
π |
2 |
(2k+1)π |
2 |
kπ |
2 |
x |
2 |
π |
2 |
a2+b2 |
a | ||
|
b | ||
|
a | ||
|
b | ||
|
a | ||
|
b | ||
|
a2+b2 |
b |
a |
1 |
2 |
π |
6 |
π |
3 |
11π |
6 |
π |
3 |
3π |
4 |
π |
3 |
3π |
4 |
| ||
2 |
π |
3 |
π |
3 |
4π |
3 |
π |
3 |
4π |
3 |
π |
3 |
π |
3 |
π |
6 |
θ |
2 |
4 |
5 |
π |
2 |
θ |
2 |
3 |
5 |
1-sinα |
α |
2 |
α |
2 |
α |
2 |
| ||
4 |
sin(α+
| ||
sin2α+cos2α+1 |
θ |
2 |
3 |
5 |
θ |
2 |
4 |
5 |
A.第一象限 | B.第二象限 | C.第三象限 | D.第四象限 |
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