问题
解答题
已知tanα=2,求:(1)tan(α+
|
答案
(1)∵tanα=2,∴tan(α+
)=π 4
=tanα+1 1-tanα
=-3.2+1 1-2
(2)∵tanα=2,∴
=6sinα+cosα 3sinα-2cosα
=6tanα+1 3tanα-2
=12+1 6-2
.13 4
已知tanα=2,求:(1)tan(α+
|
(1)∵tanα=2,∴tan(α+
)=π 4
=tanα+1 1-tanα
=-3.2+1 1-2
(2)∵tanα=2,∴
=6sinα+cosα 3sinα-2cosα
=6tanα+1 3tanα-2
=12+1 6-2
.13 4