Calculate the angle of a=1°, b=1', c= 1" in radians.

1° = π/180° = 0.005555556π = 0.01745329252 rad

Answer 2) b = 1' =  = 0.0002907 radians

Explanation : A minute of arc is π/10800 of radian; which is a measurement unit of angular which is equal to 1/60 of 1° degree.

So substituting the value of 1°  as  and on solving we get,

0.01745/60 = 0.0002907 radians.

A minute of arc is π/10800 of a radian.

Answer 3) C= 1'' = 4.8481

Explanation - When calculating second of arc which is considered to be 1/60 of an arc minute, and 1/3600 of a degree; 

So all these are inter-related units which can be calculated if any one value is given;

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.