题目内容
(1)|-2|+(3-π)0-2-1+
.
(2)cos60°+
sin45°+tan30°•cos30°.
3 | -27 |
(2)cos60°+
| ||
2 |
(1)原式=2+1-
-3=-
;
(2)原式=
+
+
×
=1
.
1 |
2 |
1 |
2 |
(2)原式=
1 |
2 |
1 |
2 |
| ||
3 |
| ||
2 |
1 |
2 |
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