题目内容
已知sin2α=
,α∈(0,
),则a=______.
| ||
| 2 |
| π |
| 2 |
∵α∈(0,
),∴2α∈(0,π),
∵sin2α=
,∴2α=
或2α=
∴α=
或
故答案为
或
| π |
| 2 |
∵sin2α=
| ||
| 2 |
| π |
| 3 |
| 2π |
| 3 |
∴α=
| π |
| 6 |
| π |
| 3 |
故答案为
| π |
| 6 |
| π |
| 3 |
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题目内容
| ||
| 2 |
| π |
| 2 |
| π |
| 2 |
| ||
| 2 |
| π |
| 3 |
| 2π |
| 3 |
| π |
| 6 |
| π |
| 3 |
| π |
| 6 |
| π |
| 3 |