问题
填空题
已知tan(α+
|
答案
∵tan(α+
)=π 6
,tan(β-1 2
)=3,π 6
∴tan(α+β)
=tan[(α+
)+(β-π 6
)]π 6
=tan(α+
)+tan(β-π 6
) π 6 1-tan(α+
)tan(β- π 6
)π 6
=
+31 2 1-
×31 2
=-7.
故答案为:-7
已知tan(α+
|
∵tan(α+
)=π 6
,tan(β-1 2
)=3,π 6
∴tan(α+β)
=tan[(α+
)+(β-π 6
)]π 6
=tan(α+
)+tan(β-π 6
) π 6 1-tan(α+
)tan(β- π 6
)π 6
=
+31 2 1-
×31 2
=-7.
故答案为:-7