a |
b |
a |
b |
a |
b |
a |
b |
1 |
2 |
1+cos2x |
2 |
2 |
π |
4 |
π |
4 |
3
| ||
2 |
a |
b |
a |
b |
2 |
π |
4 |
7π |
4 |
π |
4 |
π |
4 |
π |
4 |
5π |
4 |
π |
4 |
3π |
4 |
π |
4 |
3π |
4 |
2 |
5 |
π |
4 |
1 |
4 |
1+tanα |
1-tanα |
A.
| B.
| C.
| D.
|
sin2x-cos2x+1 |
2sinx |
a |
2 |
1 |
2 |
a |
b |
a |
b |
a |
b |
a |
3 |
2 |
3 |
2 |
b |
x |
2 |
x |
2 |
π |
2 |
a |
b |
a |
b |
a |
b |
3 |
a |
b |
2cos10°-sin20° |
4sin70° |
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