Question

how find value of 1'(minute of arc or arcmin) in radian.

Answer 1

2π radians = 360°

=> π radians = 180°

1 Radian = 180° / π degrees

=> π / 180 radians = 1 degree

1 degree = 60 minutes

=> 1 minute = 1 degree / 60

=> 1 minute = π / 180 / 60

=> 1 minute = π / 10800 radians

=> 1 minute = 0.000290888 radians

=> 1 minute = 2.9 * 10⁻⁴ radians