Answer:
option a 75°
Step-by-step explanation:
45°+60°+third angle=180°[by angle sum property]
105°+third angle=180°
third angle =180°-105°
third angle=75°
3/15 in the simplest form is 1/5....
when you divide by 3 it gives 1/5.
can you give more of the question
it is 706.5 in sq
