sin 15 cos 75 cos 120
Matematika
teguh324
Pertanyaan
sin 15 cos 75 cos 120
1 Jawaban
-
1. Jawaban vgw
sin 15 × cos (90-15) × cos (180-60)
sin15 × sin15 × -cos60
sin²15 × -1/2
-0,033