Question

Por favor me ajudem ,Determine x,y e z

Answer 1

a) 180=140+y
180-140=y
y=40°
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90+20+x=180
x=180-110
x=70°
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90+20+z+40=180
z=180-150
z=30°
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b) 45+60+x=180
x=180-105
x=75
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75+y+45=180
y=180-120
y=60°