Angle in Radian Conversion

The angle \(1'\) (minute of arc) in radian is nearly equal to,

[2020- Covid]

\(4.85 \times 10^{-4}\text{ rad}\)

\(4.80 \times 10^{-6}\text{ rad}\)

\(1.75 \times 10^{-2}\text{ rad}\)

\(2.91 \times 10^{-4}\text{ rad}\)

Convert \(1'\) to degrees, then to radians. \(1' = (1/60)^\circ = (1/60) \times (\pi/180)\text{ rad} \approx 2.91 \times 10^{-4}\text{ rad}\)