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direction cosine

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noun Mathematics.

the cosine of the angle made by a given vector and a coordinate axis.

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“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.

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Compare direction angle.

Origin of direction cosine

First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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