sin(π-α)cos(2π-α) | ||
tan(π-α)sin(
|
| ||
3 |
cosα-sinα |
cosα+sinα |
sin(π-α)cos(2π-α) | ||
tan(π-α)sin(
|
| ||
3 |
| ||
3 |
2 |
cosα-sinα |
cosα+sinα |
1-
| ||
1+
|
1-tanα |
1+tanα |
1-
| ||
1+
|
2 |
-sinαcosα+cos2α |
sin2α+cos2α |
-
| ||
|
-
| ||
2+1 |
4-
| ||
3 |
5 |
12 |
A.
| B.y=2cos2x | C.
| D.-
|
1 |
5 |
π |
2 |
3 |
5 |
π |
4 |
A.-
| B.-7 | C.7 | D.
|
1 |
2 |
3 |
b•cosC-a |
bcosA-c |
sinC |
sinA |
A.-1 | B.0 | C.1 | D.2 |
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