CareerCup

The hour hand of a normal 12-hour analogue clock turns 360° in 12 hours (720 minutes) or 0.5° per minute. The minute hand rotates through 360° in 60 minutes or 6° per minute. So,the angle between Hr hand and Minutes hand is |0.5*(60*h + m) - 6*m|. For example angle between hr hand and minutes hand at 3hr 30 minutes is |0.5*(60*3 + 30) - 6*30| = |0.5*210 - 90| = 75 degree.

hour angle = 360 * (hour % 12)/12;
Minute Angle = 6* minutes.

So for 3 .30 hour angle = 360* (3%12)/12 = 90 degrees
minute angle = 6*30 = 180 degrees

So angle = 180 -90 = 90 degrees

hour hand for 1 hour=30 degree
minute hand for 1 hour =360 degree

Minute angle = M*6 (each minute 6 degrees)
Hour angle = H*30 + 30 * (60/M) - each hour 30 degrees + part of 30 degrees depends
on how many minutes.

abs(30*(h+m/60) - 60*m)

Time in H:M (5:30, 12:20, etc.)

In the text book, why has the author taken the remainder with 360 i.e. (%360) of the final expression ?
(30h - 5.5m) % 360

abs(h*(360/12)+(m/60)*(360/12) - m*6)