题目内容
若tanα=-2，则tan(α+
)=______．
| π |
| 4 |
∵tanα=-2
∴tan（α+
）=
=
=-
故答案为：-
．
∴tan（α+
| π |
| 4 |
| tanα+1 |
| 1-tanα |
| -2+1 |
| 1-(-2) |
| 1 |
| 3 |
故答案为：-
| 1 |
| 3 |
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题目内容
| π |
| 4 |
| π |
| 4 |
| tanα+1 |
| 1-tanα |
| -2+1 |
| 1-(-2) |
| 1 |
| 3 |
| 1 |
| 3 |