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Sveta_85 [38]
3 years ago
5

HELP ASAP!! 7. Solve

Mathematics
1 answer:
natita [175]3 years ago
7 0

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

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