Tan 30° + Sin 210° - Tan 45° :
Jawab:
trigonometri
nilai fungsi
sudut relasi
nilai
tan 30 + sin210 - tan45 =
= tan 30 + sin(180+30) - tan45
= tan 30 - sin 30 - tan45
[tex]\sf = \frac{1}{\sqrt 3} - \frac{1}{2} - 1[/tex]
[tex]\sf = \frac{1}{3}\sqrt 3} - \frac{3}{2}[/tex]
[tex]\sf = \frac{1}{6}(2\sqrt 3} - 9)[/tex]
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