Which expression is equivalent to cos120°?

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Which expression is equivalent to cos120°?

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Vodka 3 years 2021-07-20T15:07:47+00:00 1 Answers 12 views 0

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  1. mit
    0
    2021-07-20T15:09:27+00:00
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    The expression cos240 degrees is equivalent to cos120 degrees

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )