Sin(-11П/6)+cos (-2П/3)+tg 0 -ctg 3П/4=

Question

Sin(-11П/6)+cos (-2П/3)+tg 0 -ctg 3П/4=

Answer 1

Sin(-11П/6+2П)+сos(-2П/3+2П)+tg0-ctg(-1/4П)=sin(П/6)+cos(П/3)+0-1=1-1=0