题目内容
计算:
+
•sin45°-
cos60°.
| tan30°•sin30° |
| tan45°•cot60° |
| 2 |
| 1 |
| 2 |
原式=
+
×
-
×
=
+1-
=
.
| ||||||
1×
|
| 2 |
| ||
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
=
| 1 |
| 2 |
| 1 |
| 4 |
=
| 5 |
| 4 |
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相关题目
题目内容
| tan30°•sin30° |
| tan45°•cot60° |
| 2 |
| 1 |
| 2 |
| ||||||
1×
|
| 2 |
| ||
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 4 |
| 5 |
| 4 |