帮我解下这几角个正弦值和余弦值,

1个回答

sin0=0sinπ/6=1/2sinπ/4=√2/2sinπ/3=√3/2sinπ/2=1sin2/3π=sin(π-1/3π)=sin1/3π=√3/2sin3/4π=sin(π-1/4π)=sin1/4π=√2/2sin5/6π=sin(π-1/6π)=sin1/6π=1/2sinπ=0sin7/6π=sin(π+1/6π)=-sin1/6π...