✨ Best Answer ✨
(2) 0
sin75=sin(90-15)=cos15
cos165=cos(180-15)=-cos15
(3) 1
cos70=cos(90-20)=sin20
✨ Best Answer ✨
(2) 0
sin75=sin(90-15)=cos15
cos165=cos(180-15)=-cos15
(3) 1
cos70=cos(90-20)=sin20
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