cos 5/2 A. Sin ½ A =...
Matematika
emmanuellajessi
Pertanyaan
cos 5/2 A. Sin ½ A =...
1 Jawaban
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1. Jawaban Anonyme
TriGonoMetRi
cos 5/2 a . sin 1/2 a
= 1/2 (sin (5/2 a + 1/2 a) - sin (5/2 a - 1/2 a))
= 1/2 (sin 3a - sin 2a) ✔