问题
解答题
计算：sin230°+cos245°+
|
答案
原式=(
)2+(1 2
)2+2 2
•2
•1=3 2
+1 4
+1 2
=6 2
.3+2 6 4
搜题请搜索小程序“爱下问搜题”
计算：sin230°+cos245°+
|
原式=(
)2+(1 2
)2+2 2
•2
•1=3 2
+1 4
+1 2
=6 2
.3+2 6 4