计算:2×（-3）º+2cos45º-|1－根号2|

计算:2×（-3）º+2cos45º-|1－根号2|
计算:2×（-3）º+2cos45º-|1－根号2|

计算:2×（-3）º+2cos45º-|1－根号2|

题目前面怎么有个-3度

2×（-3）º+2cos45º-|1－根号2|
=2×1+2×√2/2-(√2-1)
=2+√2-√2+1
=3