Question

determine is values day incognita ​

Answer 1

c)

30°+40°+Z= 180°

70°+Z= 180°

Z= 180°-70°

Z= 110°

110°+X= 180°

X= 180°-110°

X= 70°

55°+70°+Y=180°

125°+Y=180°

Y= 180°-125°

Y=55°