(-1) 2020 ×( 1 2 ) -2 +(sin98°- π 2 ) 0 +| 3 -2sin60

(-1) 2020 ×( 1 2 ) -2 +(sin98°- π 2 ) 0 +| 3 -2sin60°|
2025-01-04 08:14:24
推荐回答(1个)
回答1:

原式=1×4+1+|
3
-
3
|
=4+1
=5.