sinα+2cosα |
5cosα-sinα |
| ||||
|
tanα+2 |
5-tanα |
-2+2 |
5-(-2) |
2sinαcosα+cos2α |
sin2α+cos2α |
| ||||
|
2tanα+1 |
tan2α+1 |
2×(-2)+1 |
(-2)2+1 |
3 |
5 |
1-sin8 |
2+2cos8 |
A.2sin4-4cos4 | B.-2sin4-4cos4 |
C.-2sin4 | D.4cos4-2sin4 |
| ||
cos170°+
|
4 |
5 |
π |
2 |
AB |
2
| ||
5 |
π |
2 |
π |
2 |
5 |
13 |
5 |
13 |
A.
| B.-
| C.
| D.-
|
1 |
b |
1 |
a |
3 |
π |
2 |
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