题目内容
若tan(α+β)=3,tan(β-
)=2,则tan(α+
)=______.
| π |
| 4 |
| π |
| 4 |
∵tan(α+β)=3,tan(β-
)=2,α+
=(α+β)-(β-
),
∴tan(α+
)
=tan[(α+β)-(β-
]
=
=
=
.
故答案为:
.
| π |
| 4 |
| π |
| 4 |
| π |
| 4 |
∴tan(α+
| π |
| 4 |
=tan[(α+β)-(β-
| π |
| 4 |
=
tan(α+β)-tan(β-
| ||
1+tan(α+β)tan(β-
|
=
| 3-2 |
| 1+3×2 |
=
| 1 |
| 7 |
故答案为:
| 1 |
| 7 |
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