计算:2×(-3)º+2cos45º-|1-根号2|
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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
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