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> 计算:(1)(-2)2-9+|-3|+(12)-1-(2009)0(2)(tan60°)-1×34-|-cot30°|+23×sin330°.-数学
计算:(1)(-2)2-9+|-3|+(12)-1-(2009)0(2)(tan60°)-1×34-|-cot30°|+23×sin330°.-数学
题目简介
计算:(1)(-2)2-9+|-3|+(12)-1-(2009)0(2)(tan60°)-1×34-|-cot30°|+23×sin330°.-数学
题目详情
计算:
(1)
(-2
)
2
-
9
+|-3|+(
1
2
)
-1
-(
2009
)
0
(2)
(tan60°
)
-1
×
3
4
-|-cot30°|+
2
3
×si
n
3
30°
.
题型:解答题
难度:中档
来源:不详
答案
(1)原式=4-3+3+2-1
=5;
(2)原式=
3
3
×
3
2
-
3
3
+8×
class="stub"1
8
=
class="stub"3
2
-
3
.
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题目简介
计算:(1)(-2)2-9+|-3|+(12)-1-(2009)0(2)(tan60°)-1×34-|-cot30°|+23×sin330°.-数学
题目详情
(1)(-2)2-
(2)(tan60°)-1×
答案
=5;
(2)原式=
=