8.6

Part of 2000 All-Russian Olympiad Regional Round

Problems(1)

X minutes for electric train - All-Russian MO 2000 Regional (R4) 8.5

Source:

The electric train traveled from platform A to platform B in

X

0< X<60

X

if it is known that as at the moment departure from A, and at the time of arrival at B, the angle between hourly and the minute hand was equal to

X

algebrageometryangles