问题
解答题
化简与计算: (1)
(2)化简:
|
答案
(1)
+38
-1 3
+1 2 3 2
=2
+2
-3
+2 2 3 2
=
+3 2 2
.3 3 2
(2)
sin60°-(cos45°-1)0-tan30°cos30°3
=
×3 2
-1-3
×3 3 3 2
=
-1-3 2 1 2
=0.
化简与计算: (1)
(2)化简:
|
(1)
+38
-1 3
+1 2 3 2
=2
+2
-3
+2 2 3 2
=
+3 2 2
.3 3 2
(2)
sin60°-(cos45°-1)0-tan30°cos30°3
=
×3 2
-1-3
×3 3 3 2
=
-1-3 2 1 2
=0.