In the diagram, o
o
o
o
o and RS//TU
calculate y
Attached Figure / Diagram
A
102o
B
78o
C
70o
D
60o
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
o(Angles in a triangle)
110 + 5x = 180o
5x = 180o - 110 = 70o
x = \(\frac{70}{5}\) = 14o
Also y + 50 + 2(14) = 180o
y + 50 + 28 = 180o
y = 180 - 78
y = 102o
Source: Myschool Past Questions Archive (Record #36424)