Buktikan!! 2-sin^2a/cos a=sec a+cos a
Matematika
intanberliana88
Pertanyaan
Buktikan!!
2-sin^2a/cos a=sec a+cos a
2-sin^2a/cos a=sec a+cos a
1 Jawaban
-
1. Jawaban Anonyme
Kelas 10 Matematika
Bab Trigonometri
(2 - sin² a)/cos a
= (2 - (1 - cos² a))/cos a
= (1 + cos² a)/cos a
= (1/cos a) + (cos² a / cos a)
= sec a + cos a
Terbukti