问题
解答题
计算cos245°+sin60°•tan30°-
|
答案
原式=(
)2+2 2
×3 2
-3 3
,(1-
)23
=
+1 2
-1 2
+1,3
=2-
.3
故答案为:2-
.3
计算cos245°+sin60°•tan30°-
|
原式=(
)2+2 2
×3 2
-3 3
,(1-
)23
=
+1 2
-1 2
+1,3
=2-
.3
故答案为:2-
.3