c. 60 derajat 48 menit

u”
30 = 30/180 03c0 rad = 1/6 03c0 rad”, u”105 = 105/180 03c0 rad = 7/12 03c0 rad”, u”60 = 60/180 03c0 rad = 1/3 03c0 rad”, u”48 = 48/180 03c0 rad = 4/15 03c0 rad”,