Tolong di jawab!!! Jawab semua 1-4 ada yg bisa jawab?
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= sin 60°
= 1/2 √3
b) cos 210°
= cos (180+30)
= - cos 30°
= - 1/2 √3
c) Tan 300°
= Tan (360-60)
= - Tan 60°
= -√3