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Verified answer
Mapel : MatematikaKelas : X SMA
Bab : Trigonometri
Pembahasan :
Aturan Sinus
c/Sin C = a/Sin A
10/Sin 45° = a/Sin 60°
10 . (1/2 √3) = 1/2 √2 a
5√3 = 1/2 √2 a
10√3 = √2 a
a = (10√3)/(√2)
a = (10√6)/(√2)²
a = 5√6 cm
Verified answer
<C=180-(60+75)=180-135
=45°
a/sin A=c/sin C
a/sin 60°=10/sin 45°
√2/2 a=5√3
a=5√3 : √2/2
a=5√3 x2/√2
=10√3/√2
=5√6 cm
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