题目内容
若cosα=
,且α∈(0,
),则tan
=______.
| 3 |
| 5 |
| π |
| 2 |
| α |
| 2 |
∵cosα=
,且α∈(0,
),
∴tan
=
=
=
.
故答案为
.
1-tan2
| ||
1+tan2
|
| π |
| 2 |
∴tan
| α |
| 2 |
|
|
| 1 |
| 2 |
故答案为
| 1 |
| 2 |
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题目内容
| 3 |
| 5 |
| π |
| 2 |
| α |
| 2 |
1-tan2
| ||
1+tan2
|
| π |
| 2 |
| α |
| 2 |
|
|
| 1 |
| 2 |
| 1 |
| 2 |