cosA-3cosC |
cosB |
3c-a |
b |
sinC |
sinA |
a |
sinA |
b |
sinB |
c |
sinC |
3c-a |
b |
3ksinC-ksinA |
ksinB |
3sinC-sinA |
sinB |
cosA-3cosC |
cosB |
3sinC-sinA |
sinB |
sinC |
sinA |
sinC |
sinA |
|
5 |
2 |
10 |
1 |
2 |
1 |
1+sinα |
1 |
1+cosα |
m |
C |
2 |
n |
3 |
C |
2 |
C |
2 |
3 |
2 |
cos2x-sin2x |
2 |
1 |
2 |
1 |
4 |
3 |
3 |
AB |
a |
CA |
b |
a |
b |
A.钝角三角形 | B.直角三角形 | C.锐角三角形 | D.无法判定 |
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