π |
4 |
A.(
| B.(
| C.(-
| D.(-
|
π |
4 |
y |
r |
y |
2 |
π |
4 |
x |
r |
x |
2 |
2 |
2 |
π |
4 |
1 |
3 |
sinα+2cosα |
5cosα-sinα |
| ||
2 |
A.30° | B.k•360°+30°(k∈Z) |
C.k•360°±30°(k∈Z) | D.k•180°+30°(k∈Z) |
A.k•360°+51°(k∈Z) | B.k•360°-51°(k∈Z) |
C.k•180°+51°(k∈Z) | D.k•180°-51°(k∈Z) |
11 |
4 |
A.-
| B.-
| C.
| D.
|
16π |
3 |
A.
| B.
| C.
| D.-
|
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