Question

HELP ASAP!!

7. Solve

Answer 1

x = 0°

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 =
`cos^(-1)` (1) = 0° for 0° ≤ x ≤ 180°