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Jawabannya e
Caranya
3 cos x/sin 2x
3 cos x/ 2 sinx cosx
Cos nya dicoret
3/2sin x
3/2sin pi/3
3/2 sin 60 derajat
3/ 2 . 1/2 akar 3
3/ akar 3
Dikali sekawannya 3/akar 3 . Akar 3/akar 3
Jadi 3 akar 3 / 3
Jadi hasilnya akar 3