5 |
A.
| B.2 | C.-
| D.-2 |
5 |
5 |
4 |
5 |
π |
4 |
A.-
| B.
| C.-
| D.
|
π |
2 |
π |
2 |
3 |
5 |
A.
| B.
| C.-
| D.-
|
1 |
2 |
A.sinθ=
| B.sinθ=-
| ||||||||
C.sinθ-cosθ=0 | D.cosθ+sinθ=0 |
1-2sin(π+2)cos(π+2) |
A.sin2-cos2 | B.cos2-sin2 | C.±(sin2-cos2) | D.sin2+cos2 |
tan2a-1 |
tanα |
2(1-tan2α) |
2tanα |
1 |
tanα |
2 |
tan2α |
1 |
tan2α |
2 |
tan4α |
1 |
tan4α |
2 |
tan8α |
π |
32 |
π |
16 |
π |
8 |
1 | ||
tan
|
A.-2 | B.-4 | C.-6 | D.-8 |
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