Magnitude of angle

What magnitude has an obtuse angle enclosed by the hands of clocks at 12:20 hours?

Correct result:

A =  250 °

Solution:

F=360∘  X=F⋅ (2060−2012⋅ 60)=360⋅ (2060−2012⋅ 60)=110∘  A=F−X=360−110=250∘

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