1.

Find the angle between the minute hand and the hour hand of a clock at 7.20 am

Answer» Angle traced by the hour hand in `12` hours `= 360^(@)`,
Angle traced by it in `7 h 20` min i.e., in `22/3` ho `= (360/12 xx 22/3)^(@) = 220^(@)`
Angle traced by the minute hand in `60` min `= 360^(@)`.
Angle traced by the minute hand in `20` min `(360/12 xx 20)^(@) = 120^(@)`.
Hence, the required anle between the two hands.
`= (220^(@) - 120^(@)) = 100^(@)`.


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