Объяснение:
cos45=√2/2
tg45=1
sin120=sin(90+30)=cos30=√3/2
-cos120= - cos(90+30)= - (-sin30)=sin30=1/2
8-√4=8-2=6
cos135=cos(90+45)= -sin45= -√2/2
-cos135= - cos(90+45)= - (-sin45)=sin45=√2/2
tg180=0
sin135=sin(90+45)=cos45=√2/2
cos45= - cos135= sin135
ответ: -соs135 ; sin135
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Объяснение:
cos45=√2/2
tg45=1
sin120=sin(90+30)=cos30=√3/2
-cos120= - cos(90+30)= - (-sin30)=sin30=1/2
8-√4=8-2=6
cos135=cos(90+45)= -sin45= -√2/2
-cos135= - cos(90+45)= - (-sin45)=sin45=√2/2
tg180=0
sin135=sin(90+45)=cos45=√2/2
cos45= - cos135= sin135
ответ: -соs135 ; sin135