sin(-52兀/3)=sin(-52兀/3)=sin(-17兀-兀/3)=-sin(兀/3) 哪里错了?
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sin(-52兀/3)=sin(-52兀/3)=sin(-17兀-兀/3)=-sin(兀/3)哪里错了?sin(-52兀/3)=sin(-52兀/3)=sin(-17兀-兀/3)=-sin(兀/3)哪
sin(-52兀/3)=sin(-52兀/3)=sin(-17兀-兀/3)=-sin(兀/3) 哪里错了?
sin(-52兀/3)=
sin(-52兀/3)=sin(-17兀-兀/3)=-sin(兀/3) 哪里错了?
sin(-52兀/3)=sin(-52兀/3)=sin(-17兀-兀/3)=-sin(兀/3) 哪里错了?
原式=sin(-18π+2π/3)
=sin(2π/3)
=√3/2
sin(-52兀/3)=sin(-16-4兀/3)=sin(-4兀/3)=sin(2兀/3)=二分之根号三
sin(-52兀/3)=sin(-52兀/3)=sin(-17兀-兀/3)=-sin(兀/3) 哪里错了?
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