4sinα-2cosα |
5cosα+3sinα |
4sinα-2cosα |
5cosα+3sinα |
4tanα-2 |
5+3tanα |
6 |
11 |
2sinα-cosα |
sinα+2cosα |
A.0 | B.
| C.1 | D.
|
1-sin2θ |
A.cosθ | B.-cosθ | C.±cosθ | D.以上都不对 |
| ||
5 |
| ||
10 |
2 |
2 |
3 |
1 |
sin2α-2sinαcosα+4cos2α |
π |
4 |
3π |
4 |
π |
4 |
π |
4 |
3 |
5 |
π |
4 |
5 |
13 |
π |
2 |
3 |
5 |
π |
4 |
A.
| B.7 | C.-
| D.-7 |
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