segitiga ABC siku-siku di C ,AB = 6 cm dan BC = 4 cm nilai cos a berapa....
Matematika
Nurfadilla111
Pertanyaan
segitiga ABC siku-siku di C ,AB = 6 cm dan BC = 4 cm nilai cos a berapa....
1 Jawaban
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1. Jawaban sahrilx14
==> AB^2 = 6^2 - 4^2
==> AB^2= 36 -16
==> AB = akar 20 = 2 akar 5
==> cos A = de/mi = 2 akar 5 / 6
==> akar5 / 3