Initially both hands are at 12(noon)
1 hr= 30 dgrs ( 12 to 5 = 5 hrs)
so 5*30 = 150 dgrs and
in 60 mins cover 30 dgrs
in 10 mins= 30/60
in 1 min= 30/60*10= 5 dgrs
so
150 + 5 = 155 dgrs
Narendran, S S said:
(Sat, Aug 13, 2011 04:21:06 PM)
Angle between hr and min is given by
A =30*hr~(11/2)*min
= 30*5 - (11/2)*10
= 95 degrees
Now the angle swiped by the min hand alone is
6 degrees per min
hence 60 degrees per 10 min
Angle swiped by hr hand alone is
A+60 = 95+60 = 155 degrees.
Navaneetha Krishnan said:
(Sun, Aug 28, 2011 09:41:36 PM)
Sir i can't understand that 155 degree for which timing?
Given : our hour hand started at noon i.e. 12 o'clock
and 10 minutes past 5 i.e. 5 hour 10 minutes
we find angle between 12 and 5.10 o'clock
firstly we convert 5hour 10min into minitus 5*60+10=310min
and 310min convert into hour 310/60=31/6
In 12h = 360
So in 31/6 h= (360/12)(31/6)=155 degree.
Kranti said:
(Wed, Dec 7, 2011 02:58:21 PM)
Very nice explanatoin given by shravan.
Madesh said:
(Wed, Jan 4, 2012 11:34:47 PM)
Don't worry I will explain Clearly....
Past 5 means 5 hours.. and 10 mins out of 60 mins.. that's (10/60)
