What is the angle covered by the hour hand in 1 hour 20 minutes?

The hour hand completes a full rotation of $360°$ in $12$ hours.

The angle covered by the hour hand in $1$ hour:

$\text{Angle per hour} = \dfrac{360°}{12}$

$\text{Angle per hour} = 30°$

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Convert $1$ hour $20$ minutes to hours:

$1 \text{ hour } 20 \text{ minutes} = 1 + \dfrac{20}{60} \text{ hours}$

$= 1 + \dfrac{1}{3} \text{ hours}$

$= \dfrac{4}{3} \text{ hours}$

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The angle covered by the hour hand in $1$ hour $20$ minutes:

$\text{Angle} = \dfrac{4}{3} \times 30°$

$= \dfrac{120°}{3}$

$= 40°$

Therefore, the hour hand covers $40°$ in $1$ hour $20$ minutes.