perhatikan gambar segitiga KLM berikut! tentukan besar sudut M
pakai caranya
pakai caranya
Jawab:
2x + 4x + x + 12 = 180
2x + 4x + x = 180 - 12
7x = 168
x = 168 / 7
x = 24
Maka,
K = 4x = 4 (24) = 96°
L = x+12 = 24 + 12 = 36°
M = 2x = 2 (24) = 48°
jadi, sudut M adalah 48°
Penjelasan dengan langkah-langkah:
[tex]sdt \: k + sdt \: l + sdt \: m = 180 {}^{o} \\ 4x + x + 12 + 2x = 180 {}^{o} \\ 7x + 12 = 180 {}^{o} \\ 7x = 180 - 12 = 168 \\ x = \frac{168}{7} = 24 \\ sdt \: m = 2x \\ = 2 \times 24 = 48 {}^{o} [/tex]
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