Here the clock is a circle, which is dived by 12 units or hour

SO each hour has an angle of = 360/12 = 30 degree.

Now plz refer to the diagram

here we need to find the degree x

so angle between 6 to 5 is = 30 degree

angle between 5 to 4 is = 30 degree

and angle between 4 and 3 is at the middle i.e = 15 degree (or it can also be explained as = \(\frac{6}{12} * 30\) = 15, where 6 is the minute arm and 12 is the total division in the circle and 30 is the degree between each hour).

Hence the total angle = 30 + 30 + 15 = 75 degree