题目内容
计算:4tan2
-cos2
+
sin2
+sinπ•tan
=______.
| π |
| 4 |
| π |
| 3 |
| 1 |
| 2 |
| π |
| 6 |
| π |
| 4 |
4tan2
-cos2
+
sin2
+sinπ• tan
=4-
+
•
+0=
,
故答案为
.
| π |
| 4 |
| π |
| 3 |
| 1 |
| 2 |
| π |
| 6 |
| π |
| 4 |
| 1 |
| 4 |
| 1 |
| 2 |
| 1 |
| 4 |
| 31 |
| 8 |
故答案为
| 31 |
| 8 |
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