dik p =3x -y q = 2x + 3y tentukan cos (p-q)
Matematika
muhammadhafiz4
Pertanyaan
dik p =3x -y q = 2x + 3y tentukan cos (p-q)
1 Jawaban
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1. Jawaban HikmatHDY
cos (p-q)
=> cos (p - q)
=> cos [(3x - y) - (2x + 3y)]
=> cos(x - 4y)
maka :
=> cos(x - 4y)
=> cos x cos 4y + sin x sin4y