Hasil 2 cos 120° sin 330° – cos 240° adalah
Jawaban Terkonfirmasi
2cos120°sin330°-cos240°
= 2(-1/2)•(-1/2)-(-1/2)
= 1/2+1/2 =1
Jawaban Terkonfirmasi
Kelas 10 Matematika
Bab Trigonometri
2 . cos 120° . sin 330° – cos 240°
= 2 . (-1/2) . (-1/2) – (-1/2)
= 1/2 + 1/2
= 1