It is 397.8 bc if u make 530.4 a fraction = 530.4/1 then u just multiply it by 3/4 u will get 1591.2/4 then u simply reduce it by dividing ( top in , bottom out ) and u get 397.8
86 and 94 :) supplementary angles add up to 180 degrees while complementary add up to 90 degrees
