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

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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