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Trigonometri_Oke_1

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Sudut 270 o .Apabila r bergerak berlawanan arah jarum jam sehingga berimpitpada sumbu y negatif, maka sudut α= 270 o , r = 1, x = 0 dan y = -1.Sehingga diperoleh :0 y−1• 270 = = = −1.sinr10 x0• cos 270 = r=1= 00• tan 270y -1x=0= tak terdefinisi0 11• csc270=1= −1= .=osin 270 −.1 1=o=cos 270= tak terde11=o=−1tan 2700= .0• sec 2700finisi0• cot 2700.Sudut 360 o dan Sudut 0 o .Apabila r bergerak berlawanan arah jarum jam satu putaran penuhsehingga berimpit pada sumbu x lagi, maka sudut α= 360 o , r = 1,x = 1 dan y = 0. jadi perbandingan trigonometrinya sama dengansudut α = 0 o .0 y0• 360 = r= = 0 .sin1•0 x1cos360= r=1= 1 .•0 y0tan 360 = x=1= 0 .•0 1 1csc360o=0= tak terdefinisi= .sin 3600 11• 360 =o= = 1 .sec1cos3600 1 1• cot 360o=0= tak terdefinisi= .tan 3606 |Soekirno Elven, Buku saku matematika, <strong>Trigonometri</strong>http://oke.or.id

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