题目内容
计算:
①sin45°•cos45°+tan30°;
②2-1-tan60°+(
-1)°+|-
|.
①sin45°•cos45°+tan30°;
②2-1-tan60°+(
| 5 |
| 3 |
①原式=
×
+
=
+
;
②原式=
-
+1+
=
.
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| 2 |
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| 3 |
②原式=
| 1 |
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