Answer:
x = 0°
Step-by-step explanation:
Given
- 2 + 6cosx = 8 - 4cosx ( add 4cosx to both sides )
- 2 + 10cosx = 8 ( add 2 to both sides )
10cosx = 10 ( divide both sides by 10 )
cosx = 1 , thus
x = [tex]cos^{-1}[/tex] (1) = 0° for 0° ≤ x ≤ 180°
