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Arc second

Astronomy, 2 (def 4).


Read Also:

  • Arc sin

    . arc sine

  • Arc sine

    the angle, measured in radians, that has a sine equal to a given number. Symbol: sin −1. Abbreviation: arc sin; arc sine The inverse of the sine function.

  • Arc spectrum

    a spectrum formed from the light produced by an electric arc, characteristic of the gas or vapor through which the arc passes.

  • Arc tan

    . arc tangent

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