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Trigonometri_Oke_1

Trigonometri_Oke_1

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‣ Sudut α o dan (270 o + α o ) atau (360 o - α o ): Kuadran IVy(270 o + α)0αr-yxxP(x,-y)Kuadran IVy(360 o - α)0αr-yxxP(x,-y)Kuadran IVDengan menggunakan cara yang sama seperti pada penentuanperbandingan trigonometri sebelumnya,Kesimpulan :sin (270 o + α o ) = - cos αcos (270 o + α o ) = sin αtan (270 o + α o ) = - cot αsin (360 o - α o ) = - sin αcos (360 o - α o ) = cos αtan (360 o - α o ) = - tan αcsc (270 o + α o ) = - sec αsec (270 o + α o ) = csc αcot (270 o + α o ) = - tan αcsc (360 o + α o ) = - csc αsec (360 o + α o ) = sec αcot (360 o + α o ) = - cot α14 |Soekirno Elven, Buku saku matematika, <strong>Trigonometri</strong>http://oke.or.id

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