根号COS²30°-2COS30°+1 - |Sin30°分之1-1|
=√(cos30°-1)^2-|1/(1/2)-1|
=1-√3/2-(2-1)
=-√3/2
根号tan²60°-2Tan60°+1 + |1+tan60°|
=√(tan60°-1)^2+|1+√3|
=√3-1+1+√3
=2√3