Question

求值：sin60°×

2

2

cos45°+2sin30°-tan60°+cot45=______．

Answer 1

原式=

3

2

×

2

2

×

2

2

+2×

1

2

-

3

+1，
=

3

4

+1-

3

+1，
=

8-3 3

4

．