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Verified answer
Mapel : MatematikaKelas : X SMA
Bab : Trigonometri
Pembahasan :
Cos(90 - A)/Sec A + Sin(90 - A)/Cosec A
= Sin A/(1/Cos A) + Cos A/(1/Sin A)
= Sin A Cos A + Cos A Sin A
= 2Sin A Cos A
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