Question

find unknown angle in a triangle​

Answer 1

Answer:

a)50° + 90°+ angle a =180°(sum of all angles of a triangle=180°)

140° +a=180°

a=180-140

a=40°

b)angle opposite to 25° =x

25°=x

therefore,x=25°

25+25+b=180

50+b=180

b=180-50

b=40