题目内容
已知tan(α+β)=
,tan(β-
)=
,则tan(
-α)=______.
| 2 |
| 5 |
| π |
| 3 |
| 1 |
| 4 |
| π |
| 6 |
∵tan(α+β)=
,tan(β-
)=
,
∴tan(α+
)=tan[(α+β)-(β-
)]=
=
,
则tan(
-α)=tan[
-(α+
)]=cot(α+
)=
=
.
故答案为:
| 2 |
| 5 |
| π |
| 3 |
| 1 |
| 4 |
∴tan(α+
| π |
| 3 |
| π |
| 3 |
| ||||
1+
|
| 3 |
| 22 |
则tan(
| π |
| 6 |
| π |
| 2 |
| π |
| 3 |
| π |
| 3 |
| 1 | ||
tan(α+
|
| 22 |
| 3 |
故答案为:
| 22 |
| 3 |
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| 4 |
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