Aptitude - Clock - Discussion

@All.

At first, we convert 10 hr into min i.e;
1hr=60min.
therefore,10hr=10*60=600min,and again,
10hr25min=600+25min=625min,
now, we convert min into hr again as the answer is in degrees,
therefore, 625/60hr=125/12hr.

First of all, To calculate ANGLE between a minute and second hands, Use Formula-

((60xHour)-(11xMinutes))÷2.

And then to calculate Reflex angle, Use Formula;
360° Actual Angle.

@Guru.

Actually for degree calculation |30h-{11(mints)}/2|=======30*10-{(11*25)|/2}.

300-(275)/2.
(600-275)/2.
325/2.
162.1/2.

Then reflected angle = clock angle - actual angle.
360-162.5 = 197.5 this is the correct answer.

Where; Replex angle= clock angle (ie 360)- actual angle.

Given, time= 10:25.
Here, h= 10, m=25.
h= hours. &. m= minutes.

Formula is Angle=[ 30h-(11m/2)].
=[30*10-(11(25)/2].
=[300-(275/2)].
=[(600-275)/2].
Angle =[325/2].

Reflex angle= total angle- actual angle.
= 360-(325/2),
= [720-325]/2,
= 395/2,
= 197*1/2.

In this, we have to use the formula ∠=[30h-(11m/2)].

360- hour * 30-minute * 11/2 = 360-10*30-25*11/2 = 360-162.5 = 197.5.

First, we have to calculate the angle between hour and minute hand.

Time given=10.25.
Angle between two hand=(30*H)-11/2*M.
=(30*10)-11/2*25,
=300-137.5,
=162.5.
Reflex angle = 360-162.5.
=197.5 ie;197 1/2.

Simply use formula:

Angle = 30*H - (11*M) / 2 ---> (1).
Reflex Angle= 360 - Angle ---> From (1).

How to calculate the angle between 2 hands of the clock when the time is 9.00 and 12.00 noon. Please explain.

197.5 is the correct answer for this.