Answer:
45 degree or 25%
Step-by-step explanation:
sum of angles of triangle= 180 so
-----> angle 1
(note: 30% is equal to )
------> angle 2
lets add angle 1 and 2 together
54+81=135
now lets subtract it from 180 to get the remained angle
180-135=45 and if you want it in % so you just get 100%-(30%+45%)= 25%