Question

m angel a+b=125,m angel a+c=113 in a triangle, what is the velue of a?

Answer 1

as we know that the sum of the angles of a triangle is 180

then, as there is an extra a

Now, 

(a+b) + (a+c) - a = 180

125 +113 - a = 180

238 - a = 180

-a = 180 - 238

- a = - 58

a = 58


i hope this will help you


by ABHAY