At 3 hours 45 minutes there is not an acute angle between the hands of the clock (unless you extend the hands backwards).
Right Angle or 900
Angle between the hands of a clock=|11M-60H|/2i.e. M-Minutes=35(here)H- Hours=7(here)∴ The angle b/w hands of a clock=|11*35-60*7|/2=17.5°
It is a obtuse angle.
It creates a 150o angle at 3:40