Skip to content Skip to sidebar Skip to footer
Home / Matematika / Soal

4 cos2 x – 2 sin2 x = 6 cos2 x – 2

Post a Comment

Buktikan identitas trigonometri berikut!

4 cos2 x – 2 sin2 x = 6 cos2 x – 2

Jawab:

4 cos2 x – 2 sin2 x

     = 4 cos2 x – 2(1 – cos2 x)

     = 4 cos2 x – 2 + 2 cos2 x

     = 6 cos2 x – 2

       (Terbukti)

----------------#----------------

Semoga Bermanfaat
Jangan lupa komentar & sarannya
Email: nanangnurulhidayat@gmail.com
Kunjungi terus: masdayat.net OK! 😁

Post a Comment for "4 cos2 x – 2 sin2 x = 6 cos2 x – 2"