Question

how to convert degrees to seconds in sexagesimal system/ french system?

Answer 1

A complete rotation describes 360°. In this system, a right angle is divided into 90 equal parts and each such part is called a Degree (1°) ; a degree is divided into 60 equal parts and each such part is called a Sexagesimal Minute (1’) and a minute is further sub-divided into 60 equal parts, each of which is called a Sexagesimal Second (1’’). In short,

1 right angle 1 degree (or 1°) and 1 minute ( or 1’ )

= 90 degrees (or 90°) = 60 minutes ( or 60’) = 60 seconds ( or 60’’).

Now if you are given with degree and want to convert it into seconds....then
Seconds = degree *60*60
So Amount: 1 degree (°) of angle
Equals: 3,600.00 seconds ('') in angle
Hope it helps