August 2018 2 286 Report
Trigonometri...

1. Diketahui cos α = 4/5 dan sin β = 5/13, dengan sudut α dan β lancip.Nilain sin (α+β)=
2. sin 75derajat + sin 15derajat =
3. Jika cos A = 3/5 sin B = 5/13, A di kuadran II.B di kuadran I, maka nilai dari sin (A+B)
adalah...

tolong bantu yaaah :D

nb: plus caranya/rumusnya

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