Respuesta :

Answer:

b= 47

Step-by-step explanation:

180-90 =90

90 -43 =47

Answer:

b = 47°

Step-by-step explanation:

The 3 angles lie on a straight line and sum to 180° , that is

b + 43° + 90° = 180°

b + 133° = 180° ( subtract 133° from both sides )

b = 47°

ACCESS MORE
EDU ACCESS
Universidad de Mexico