cos 135 derajat = sin...?
Matematika
asep256
Pertanyaan
cos 135 derajat = sin...?
2 Jawaban
-
1. Jawaban dnnyz07
cos 135
= cos (180 - 45)
= - cos 45 (135 = Kuadran II)
- ( cos 45 )
= - (cos (90 - 45))
= - (sin 45)
= sin (- 45) -
2. Jawaban Anonyme
Bab Trigonometri
Matematika SMA Kelas X
cos 135° = cos (45° + 90°)
cos 135° = -sin 45°