Mathematics
Senior High
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数Ⅰ(三角比⑤)
ポ 0°≦90°のとき
0≦180°のとき
sin(90°+0)=
COS(90+0)=
tan (90°+0)
sin(180°-0)=Q
cos(180°-9)=Q
tan (180°-9)=
sin105-cos150°+sin120°+cos165°?
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