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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)
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3 votes
Find value of a and b in the triangle. (please help)

Find value of a and b in the triangle. (please help)-example-1
User Forest Kunecke
by
9.2k points

1 Answer

3 votes
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.
User Sfosdal
by
9.0k points
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