Question

Sin30°-cos30°+cos60°-sin60°

Answer 1

$1 \div 2 - \sqrt{3} \div 2 + 1 \div 2 - \sqrt{3} \div 2$
1/2+1/2=1
√3/2+√3/2=2√3/2= √3
1+√3 răspuns final.