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Verified answer
Nomor 14n.tan 45°.cos 60° = sin 60°.cotan 60°
n.1.1/2 = 1/2 √3.1/3 √3
n.1/2 = 1/2
n = 1
Jawaban : B
Nomor 15
tan² 45° - cos² 30° = x.sin 45°.cos 45°
(tan 45°)² - (cos 30°)² = x.sin 45°.cos 45°
1² - (1/2 √3)² = x.1/2 √2.1/2 √2
1 - 3/4 = x.1/2
1/4 = x.1/2
x = 1/2
Jawaban : D