求2sin60°-tan45°3cot60°+2cos60°•cot45°的值．

题型：不详难度：来源：

求

2sin60°-tan45°

3cot60°+2cos60°•cot45°

的值．

答案

原式=

2× 3 2 -1

3× 3 3 +2× 1 2 ×1

=

3 -1

3 +1

=2-

3

．