вычислить:
sin 7П:3=?
соs (-5П:4)=?
tg(-13А:6)=?
ctg 13,5П=?
sin 7П:3= sin(2П+П/3)=sinП/3=(кор3)/2
соs (-5П:4)= cos(П+П/4)=-cosП/4= -(кор2)/2
tg(-13А:6)=-tg(2П+П/6) = -tgП/6= -(кор3)/3
ctg 13,5П= 0
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Verified answer
sin 7П:3= sin(2П+П/3)=sinП/3=(кор3)/2
соs (-5П:4)= cos(П+П/4)=-cosП/4= -(кор2)/2
tg(-13А:6)=-tg(2П+П/6) = -tgП/6= -(кор3)/3
ctg 13,5П= 0