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Angle between hour and minute hand at 12 30

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Analog clock is considered as circle.
The total angle formed by a circle is 3600
Now we need to find out the angle between the hour and minute hand.
Now we need to calculate the angle of hour  and minute hand by  considering the reference position as number 12.
Angle of  minute and hour hand is calculated from number 12 in clock.
Angle formed by a circular clock
3600
Angle of minute and hour hand calculated from
Number 12
Time taken by minute  hand for  one revolution
3600=60min                           
Angle formed by minute hand in I min
1min =60
Time taken by hour hand in one revolution
3600= 12 hours
Angle formed by hour hand in 1 hour
300= 1 hour
                          Angle between hour and minute hand at  12 30(00:30)
Convert 12Hr 30Min into hours
                         OR
Convert 00Hr 30 min into hours
=0+(30/60)
=0+(1/2)
=1/2
=1/2 Hrs
Angle formed by hour hand 1/2  Hrs
=(1/2)x300
 =0.5x30
=150
Angle formed by minute hand in 30 min
=30x6
=1800
Difference in angle between minute and hour hand
1800-150

=1650

Angle between hour and minute hand at 12 30 is 1650

 


NOTE: here if you convert 12 30 into hours you will get 25/2 hours.
Then angle formed by hour hand in 25/2 hours become 3750
But there is no 375 degree formation in circle as I told circle make 360 degree only. Then 3750=150  in analog clock. since i assumed 12: 30 Hrs into 00:30 Hrs


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