题目内容
若cosα=-
,且α∈(π,
),则tanα=______.
| 3 |
| 5 |
| 3π |
| 2 |
因为α∈(π,
),cosα=-
,所以sinα=-
,所以tanα=
=
故答案为:
| 3π |
| 2 |
| 3 |
| 5 |
| 4 |
| 5 |
-
| ||
-
|
| 4 |
| 3 |
故答案为:
| 4 |
| 3 |
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题目内容
| 3 |
| 5 |
| 3π |
| 2 |
| 3π |
| 2 |
| 3 |
| 5 |
| 4 |
| 5 |
-
| ||
-
|
| 4 |
| 3 |
| 4 |
| 3 |