6. Perhatikan gambar berikut! BesarTRS adalah…”T/R(6x-5)(x-20)” / 60°​

Jawaban:

7x – 20 + 60 = 180

7x + 40 = 180

7x = 180 – 40

7x = 140

x = 140/7

x = 20

sudut TRS = 6x – 5 = 6 . 20 – 5 = 120 – 5 = 115°