问题 解答题
化简与计算:
(1)
8
+3
1
3
-
1
2
+
3
2

(2)化简:
3
sin60°-(cos45°-1)0-tan30°-cos30°.
答案

(1)

8
+3
1
3
-
1
2
+
3
2

=2

2
+
3
-
2
2
+
3
2

=

3
2
2
+
3
3
2

(2)

3
sin60°-(cos45°-1)0-tan30°cos30°

=

3
2
×
3
-1-
3
3
×
3
2

=

3
2
-1-
1
2

=0.

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