



 
Hi Kristin. At 12:00, both hands are straight up. It takes twelve hours (720 minutes) for the clock to return to this position. 1:25 is 85 minutes after 12:00. So the hour hand has travelled 85/720 of a full circle. The minute hand has travelled 1 ^{25}/_{60} full circles. The 1 doesn't make any difference to the current angle, so we ignore it. So the angle between them is the difference 25/60  85/720 of a full revolution (360 degrees). Thus the calculation in degrees is just 360 x ( 25/60  85/720 ). Cheers,  


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