计算:6tan230°-3sin60°-2cos45°+tan45°
问题描述:
计算:6tan230°-
sin60°-2cos45°+tan45°
3
答
6tan230°-
sin60°-2cos45°+tan45°
3
=6×(
)2-
3
3
×
3
-2×
3
2
+1
2
2
=2-
-3 2
+1
2
=
-3 2
.
2