Nilai sin 150° cos 120° tan 315° Sec 240° + sin 300° Tolong bantuannya
Matematika
Diditwibawa
Pertanyaan
Nilai sin 150° cos 120° tan 315°
Sec 240° + sin 300°
Tolong bantuannya
Sec 240° + sin 300°
Tolong bantuannya
1 Jawaban
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1. Jawaban Anonyme
Kelas 10 Matematika
BabTrigonometri
sin 150° . cos 120° . tan 315° . sec 240° + sin 300°
= 1/2 . (-1/2) . (-1) . 1/cos 240° + (-1/2 √3)
= 1/4 . 1/(-1/2) - 1/2 √3
= 1/4 . (-2) - 1/2 √3
= -1/2 - 1/2 √3
= - (1 + √3)/2