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Nomor 1.
Nomor 2.
Nomor 3.
2. 4 tan 45° - 2 cos 60° √3 sin 60° = 4 .1 - 2 . 1/2 + √3. 1/2 √3 = 4 - 2 + 3/2 = 2 1/2
3. tan 30° - 2 sin 45° / 2 cos 45° = 1/3 √3 - 2 . 1/2 √2 / 2. 1/2 √2 = 1/3 √3 - √2 / √2 = 1/3 √6 - 2 / 2