Answer:
10 degrees
Step-by-step explanation:
7 - (-3) = 7+3 = 10 degrees
Um i think that the answer is c.12.46
Answer:
∴
and
this two sides include 
Step-by-step explanation:
Given;
A triangle 
We can see the figure of the triangle 
Where the
or
made by two sides
and
.
So
and
this two sides include 