x |
2 |
x |
2 |
x |
2 |
17π |
12 |
x |
2 |
x |
2 |
1 |
2 |
x |
2 |
1 |
2 |
x |
2 |
x |
2 |
x |
2 |
1 |
2 |
1 |
2 |
3 |
2 |
| ||
2 |
π |
4 |
3 |
2 |
2π |
1 |
17 |
12 |
5 |
4 |
π |
4 |
5 |
3 |
| ||
2 |
π |
4 |
3 |
2 |
5π |
4 |
5π |
4 |
17π |
12 |
5π |
4 |
3+
| ||
2 |
sinA+sinB |
cosA+cosB |
A.等腰三角形 | B.直角三角形 |
C.锐角三角形 | D.等腰直角三角形 |
| ||
b |
cosC |
cosB |
4 |
5 |
π |
2 |
sin2θ+2sinθcosθ |
3sin2θ+cos2θ |
tanA |
tanB |
2c |
b |
m |
n |
C |
2 |
m |
n |
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