In a triangle, the sum of the interior angles is 180.
So, you have

Plug the values for angles A and C:

Answer:
no
Step-by-step explanation:
ok
Answer:
it is 45 because a triangle with tow sides are same
75.40
+19.25=
94.65*-5 3/4%
or
94.65*-5.75%=-5.448125
94.65-5.45= $89.30
Do you mean 18? Because it would be 20 and 2. Otherwise I think it might be a really long decimal and I do not know what it is. Sorry.