2010
Mathematics
JAMB
From the diagram above, find x
A.
65°
B.
50°
C.
75°
D.
55°
Correct Answer: 65°
Explanation
∠RTS = 90° (∠ in semi circle) ∠UTS = 25° (∠ in alternate segment) X + 90 + 25 = 180(sum of ∠s on a str line) X + 115 = 180 X = 180 - 115 X = 65°
∠RTS = 90° (∠ in semi circle) ∠UTS = 25° (∠ in alternate segment) X + 90 + 25 = 180(sum of ∠s on a str line) X + 115 = 180 X = 180 - 115 X = 65°THIS WEEK's
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