What is the smaller angle between both hands at 1:20 am?

In this Question, we will be using the formula:

Angle = ( 60 H - 11 M ) ÷ 2 , Where H = Hours, M = Minutes

        = ( 60 × 1 - 11 × 20 ) ÷ 2

        = ( 60 -220 ) ÷ 2

        = 160 ÷ 2 = 80°

So, smaller angle = 80°