Question

3|tan30°-1|+sin平方60°-（cos60°-1）负2次方*tan45°+tan60°=?

Answer 1

3|tan30°-1|+sin^2 60°-(cos60°-1)^(-2)*tan45°+tan60°

=3(1-√3/3)+(√3/2)^2-1/(1/2-1)^2*1+√3

=3-√3+3/4-4+√3

=-1/4