3 |
a+b+c |
sinA+sinB+sinC |
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2 |
1 |
2 |
3 |
1 |
2 |
1 |
2 |
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2 |
3 |
13 |
a |
sinA |
b |
sinB |
c |
sinC |
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|
2
| ||
3 |
a+b+c |
sinA+sinB+sinC |
2
| ||
3 |
2
| ||
3 |
a+b+c |
sinA+sinB+sinC |
1 |
2 |
sin2αcosα-sinα |
sin2αcos2α |
1+sin2α-cos2α |
1+sin2α+cos2α |
π |
2 |
4 |
5 |
π |
2 |
3π |
4 |
10 |
3 |
5sin2
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