3 |
4 |
12 |
13 |
, |
, |
π |
2 |
2cos2
| ||||
|
3 |
4 |
2cos2
| ||||
|
cosα-sinα |
cosα+sinα |
1-tanα |
1+tanα |
1 |
7 |
π |
2 |
3 |
4 |
12 |
13 |
4 |
5 |
5 |
13 |
12 |
13 |
4 |
5 |
5 |
13 |
3 |
5 |
33 |
65 |
π |
2 |
3 |
5 |
sin2α+sin2α |
cos2α+cos2α |
5 |
4 |
π |
2 |
A.-
| B.-
| C.
| D.
|
m |
3 |
n |
B |
2 |
m |
n |
| ||
2 |
4 |
5 |
5 |
13 |
π |
2 |
π |
2 |
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