问题 解答题
计算:
(1)2sin30°+cot60°-
tan260°
cot230°
+(-cot45°)2008
(2)|tan45°-tan60°|+
sin260°-2cos30°+1
答案

(1)原式=1+

3
3
-1+1

=1+

3
3

=

3+
3
3

(2)原式=

3
-1+
(sin60°-1)2

=

3
-1+|
3
2
-1|

=

3
-1+1-
3
2

=

3
2

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