Jawab:
Trigonometri
Sudut Relasi
Penjelasan dengan langkah-langkah:
cos 36 = 0.8= 4/5
sin 36 = 3/5
a) cos 144 = cos (180 - 36)
cos 144 = - cos 36
cos 144 = - 0,8
b) cos 414 = cos (450 - 36) = sin 36 = 3/5 = 0,6
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Verified answer
Jawab:
Trigonometri
Sudut Relasi
Penjelasan dengan langkah-langkah:
cos 36 = 0.8= 4/5
sin 36 = 3/5
a) cos 144 = cos (180 - 36)
cos 144 = - cos 36
cos 144 = - 0,8
b) cos 414 = cos (450 - 36) = sin 36 = 3/5 = 0,6