题目内容
化简(1)
-
+
计算(2)sin245°-
+
(
-2006)0+6tan30°
| 27 |
| 12 |
| 45 |
计算(2)sin245°-
| 27 |
| 1 |
| 2 |
| 3 |
(1)原式=3
-2
+3
=
+3
;
(2)原式=(
)2-3
+1+6×
=
-3
+1+2
=
-
.
| 3 |
| 3 |
| 5 |
| 3 |
| 5 |
(2)原式=(
| ||
| 2 |
| 3 |
| ||
| 3 |
| 1 |
| 2 |
| 3 |
| 3 |
| 3 |
| 2 |
| 3 |
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