Jika cos x – sin x = m – 1 , maka sin 2x =

By Admin ReiPosted on December 3, 2022

Jika cos x – sin x = m – 1 , maka sin 2x =

Penjelasan dengan langkah-langkah:

${(cosx - sinx)}^{2} = {(m - 1)}^{2} \ {cos}^{2} x + {sin}^{2}x- 2sinx.cosx = {m}^{2} - 2m + 1 \ 1 - sin2x = {m}^{2} - 2m + 1 \ sin2x = 2m - {m}^{2}$