π |
2 |
1-cos2x |
2 |
1+cos2x |
2 |
2 |
π |
4 |
2π |
2 |
2 |
π |
4 |
π |
2 |
π |
4 |
π |
4 |
5π |
4 |
π |
4 |
π |
2 |
π |
8 |
2 |
π |
4 |
5π |
4 |
π |
2 |
2 |
A.等腰三角形 |
B.直角三角形 |
C.等腰直角三角形 |
D.等腰三角形或直角三角形 |
3 |
2sin280° |
m |
3 |
n |
m |
n |
3 |
2 |
3 |
2 |
π |
2 |
23 |
26 |
sin(α+
| ||
cos(π+2α) |
3 |
π |
2 |
π |
6 |
π |
2 |
6cos4x-sin2x-1 | ||
f(x+
|
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