sinx | ||
|
| ||
cosx |
A.(2kπ,2kπ+
| B.(2kπ+
| ||||||
C.(2kπ-π,2kπ-
| D.(kπ-
|
sinx | ||
|
| ||
cosx |
sinx | ||
|
| ||
cosx |
sinx |
|sinx| |
|cosx| |
cosx |
sinxcosx+|sinxcosx| |
|sinx|cosx |
π |
2 |
π |
2 |
A+B |
2 |
2 |
A.①③ | B.②④ | C.①④ | D.②③ |
4 |
3 |
sinθ+cosθ |
sinθ-cosθ |
A.
| B.-
| C.7 | D.-7 |
3π |
2 |
2 |
3π |
2 |
A.-2 | B.-1 | C.1 | D.2 |
1 |
2 |
π |
4 |
4 |
5 |
π |
4 |
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