AD |
c |
AD |
b |
b |
sinB |
c |
sinC |
c |
sinC |
a |
sinA |
a |
sinA |
b |
sinB |
a |
sinA |
b |
sinB |
c |
sinC |
6 |
AB |
sin∠ACB |
BC |
sinA |
AB |
sin60° |
30 |
sin45° |
6 |
6 |
A.已知a=3,∠C=90° | B.已知∠B=36°,∠C=90° |
C.已知a=3,∠B=36° | D.已知∠B=36°,∠A=54° |
A.已知斜边,一锐角 | B.已知两边 |
C.已知两角 | D.已知一直角边,一锐角 |
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