题目内容
计算:
(1)(-2)2-
+|-3|+(
)-1-(
)0
(2)(tan60°)-1×
-|-cot30°|+23×sin330°.
(1)(-2)2-
| 9 |
| 1 |
| 2 |
| 2009 |
(2)(tan60°)-1×
|
(1)原式=4-3+3+2-1
=5;
(2)原式=
×
-
+8×
=
-
.
=5;
(2)原式=
| ||
| 3 |
| ||
| 2 |
| ||
| 3 |
| 1 |
| 8 |
=
| 3 |
| 2 |
| 3 |
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