tty1671 tty1671
  • 04-03-2020
  • Mathematics
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find value of a and b in the triangle. (please help)

find value of a and b in the triangle please help class=

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TeespounofVanilla
TeespounofVanilla TeespounofVanilla
  • 04-03-2020
All the angles in a triangle equal to 180. So, 18+120= 138.
180-138= 42 (a)
To find b, we use the fact that a straight line is also 180.
So, 180-42 = 138.
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