On a planet Oz there are 8 days in a week, Sunday to Saturday and another day called Oz day. There are 36 hrs in a day and each day has 90 minutes while each minute has 60 sec. As on earth the hour hand covers the dial twice every day. Find the approximate angle between the hands on clock on Oz when the time is 11:40 am
69 degrees, 86 degrees, 231 degrees, 51 degrees

• 36 hours a day mane the clk will be of 18 hours.
  18 hours covrs 360 deg
  Thus 1 hour covrs 20 deg
  11 hours covers 11*20=220 deg
  ekhon,1 hour in 90 min
  thus in 90min the hour hand goes 20deg
  tai, for 1min hr hand goes 2/9deg
  sei jonne, for 40 min hour hnd goes (2/9)*40deg=80/9deg=9deg(approx)
  thus hr hand covrs total of 220+9=229deg
  now min hand covrs=40*4=160deg
  (karon, 90min=360deg
  1min=4deg)
  
  hus angle betwn them 229-160=69deg
  
  
• 13 years agoHelpfull: Yes(6) No(1)
• one trick for all this type of angle qestion
  20H-34M/9
  where H hour &m min
  here h 11 &m 40 put value 20*11-34*40/9=68.89~69
  feedback pls
• 13 years agoHelpfull: Yes(3) No(4)