题目内容
计算:
(1)(-3)0-
+|1-
|+
. (2)
-tan 30°.
(1)(-3)0-
| 27 |
| 2 |
| 3 | ||
|
| tan45°-cos60° |
| sin60° |
(1)原式=1-3
+
-1+
=-
.
(2)原式=
×
=
.
| 3 |
| 2 |
3
| ||
| 4 |
5
| ||
| 4 |
(2)原式=
1-
| ||||
|
| ||
| 3 |
| 1 |
| 3 |
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