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 p-sses.
- Arc tan
. arc tangent
- Arc tangent
the angle, measured in radians, that has a tangent equal to a given number. symbol: tan −1. abbreviation: arc tan; arc tangent the inverse of the tangent function.