Respuesta :

prestonshelton
Hello!

If By = 52 then m<BAY = 26

m<BAC = 90

m<BAC = m<BAY + m<YAC

Substitute the values we know

90 = 26 + m<YAC

Subtract 26 from both sides

64 = m<YAC

The answer is B

Hope this helps!