问题
解答题
计算:(-2)2+tan45°-2cos60°+(-1)2009+|-
|
答案
(-2)2+tan45°-2cos60°+(-1)2009+|-
|9
=4+1-2×
-1+31 2
=5-1-1+3
=6.
计算:(-2)2+tan45°-2cos60°+(-1)2009+|-
|
(-2)2+tan45°-2cos60°+(-1)2009+|-
|9
=4+1-2×
-1+31 2
=5-1-1+3
=6.