From the diagram above, find x
Attached Figure / Diagram
A
65o
B
50o
C
75o
D
55o
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
∠RTS = 90o (∠ in semi circle)
∠UTS = 25o (∠ in alternate segment)
X + 90 + 25 = 180(sum of ∠s on a str line)
X + 115 = 180
X = 180 - 115
X = 65o
Source: WAEC / JAMB / NECO Classroom Archive (Record #9805)