210 degrees
120 degrees
240 degrees - 30 degrees for each hour on the clock
obtuse
15°
30 degrees
270 degrees
120 degrees and 240 degrees.
It is a obtuse angle.
get yourself a cartesian circle, or just look at one online and translate it from there 3,6,9, and 12 would all be 90 deg increments.
At 3 hours 45 minutes there is not an acute angle between the hands of the clock (unless you extend the hands backwards).
120degrees
90 degrees
60o
30 degrees.
150
obtuse