(cot60°-sin60°)÷(cos45°+1/2 tan45°-cot30°)大神们帮帮忙

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(cot60°-sin60°)÷(cos45°+1/2tan45°-cot30°)大神们帮帮忙(cot60°-sin60°)÷(cos45°+1/2tan45°-cot30°)大神们帮帮忙(cot60

(cot60°-sin60°)÷(cos45°+1/2 tan45°-cot30°)大神们帮帮忙
(cot60°-sin60°)÷(cos45°+1/2 tan45°-cot30°)大神们帮帮忙

(cot60°-sin60°)÷(cos45°+1/2 tan45°-cot30°)大神们帮帮忙
原式=(根号3/3-根号3/2)/(1/2+1/2-根号3) =(-根号3/6) /(1-根号3) =(3+根号3)/12