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Cos x = - 0.809, find the values of x. ( - 180≤ x ≥ 180 )
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Cos x = - 0.809, find the values of x. ( - 180≤ x ≥ 180 )

User Macpak
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Answer:

cos x = - 0.809, find the values of x. ( - 180≤ x ≥ 180 )

x = - 135° and x = 45°

User Dgmora
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