Respuesta:
B=90
31+90+E=180
E= 180+90-31
E= 59
180-59= 121
C=A
121+2A=180
2A=180-121
A= 59/2
A= 24° 30'
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Respuesta:
B=90
31+90+E=180
E= 180+90-31
E= 59
180-59= 121
C=A
121+2A=180
2A=180-121
A= 59/2
A= 24° 30'