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### Discussion :: Clock

1. The reflex angle between the hands of a clock at 10.25 is:

2.  A. 180° B. 192$$\frac { 1^o } { 2 }$$ C. 195° D. 197$$\frac { 1^o } { 2 }$$

Explanation :

Angle traced by hour hand in$$\frac { 125 } {1 2 }$$hrs=[$$\frac { 360 } {1 2 }$$x$$\frac { 125 } {1 2 } ]^o$$=312$$\frac { 1^o } { 2 }$$

Angle traced by minute hand in 25 min =[$$\frac { 360 } {1 2 }$$x$$25 ]^o$$=$$150^o$$

Reflex angle = 360°-$$[312\frac { 1 } { 2 } -150]^o$$-162$$\frac { 1^o } { 2 }$$=197$$\frac { 1^o } { 2 }$$

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