题目内容
若sin(π+α)=
,α∈(-
, 0 ),则α=______.
| 1 |
| 2 |
| π |
| 2 |
∵sin(π+α)=-sinα,且sin(π+α)=
,∴sinα=-
,
∵α∈(-
, 0 ),∴α=-
,
故答案为:-
.
| 1 |
| 2 |
| 1 |
| 2 |
∵α∈(-
| π |
| 2 |
| π |
| 6 |
故答案为:-
| π |
| 6 |
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题目内容
| 1 |
| 2 |
| π |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| π |
| 2 |
| π |
| 6 |
| π |
| 6 |