nilai cos 75° sin75°=
Matematika
bella1079
Pertanyaan
nilai cos 75° sin75°=
1 Jawaban
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1. Jawaban Anonyme
TriGonoMetRi
2 sin a cos a = sin 2a
cos 75° sin 75°
= 1/2 sin 2(75°)
= 1/2 sin 150°
= 1/2 sin (180° - 150°)
= 1/2 . 1/2 √3
= 1/4 √3 ✔