1. AC = 8 cm
2. KM = 8√2 cm
1. A = 60°
cos A = cos 60°
AB/AC = ½
4/AC = ½
AC = 4 × 2
AC = 8 cm
2. K = 45°
cos K = cos 45°
KL/KM = ½√2
8/KM = 1/√2
KM = 8√2 cm
============================================
Dasar dasar ilmu trigonometri & sudut istimewa :
brainly.co.id/tugas/5030718
brainly.co.id/tugas/9249209
Aturan trigonometri (sinus & cosinus) bidang datar :
brainly.co.id/tugas/10430035
brainly.co.id/tugas/15813866
Kelas : 10
Mapel : Matematika
Materi : Bab 7 - Trigonometri
Kode : 10.2.7
No 2
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Jawaban
1. AC = 8 cm
2. KM = 8√2 cm
Pembahasan
1. A = 60°
cos A = cos 60°
AB/AC = ½
4/AC = ½
AC = 4 × 2
AC = 8 cm
2. K = 45°
cos K = cos 45°
KL/KM = ½√2
8/KM = 1/√2
KM = 8√2 cm
============================================
Pelajari lebih lanjut
Dasar dasar ilmu trigonometri & sudut istimewa :
brainly.co.id/tugas/5030718
brainly.co.id/tugas/9249209
Aturan trigonometri (sinus & cosinus) bidang datar :
brainly.co.id/tugas/10430035
brainly.co.id/tugas/15813866
============================================
Detail Jawaban
Kelas : 10
Mapel : Matematika
Materi : Bab 7 - Trigonometri
Kode : 10.2.7
No 2