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BECE Mathematics 2026 Paper
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© africaexams.com
Question : 30
Total: 40
Find the value of y in the diagram.
60°
30°
34°
28°
Validate
Solution:
Concept:
In an isosceles triangle, the base angles are equal, and the sum of interior angles is
18
0
∘
180^\circ
18
0
∘
.
Explanation:
From the diagram, the two base angles are both
y
y
y
, and the remaining angle is
11
2
∘
112^\circ
11
2
∘
.
y
+
y
+
11
2
∘
=
18
0
∘
y + y + 112^\circ = 180^\circ
y
+
y
+
11
2
∘
=
18
0
∘
2
y
=
6
8
∘
2y = 68^\circ
2
y
=
6
8
∘
y
=
3
4
∘
y = 34^\circ
y
=
3
4
∘
Answer:
3
4
∘
34^\circ
3
4
∘
(Option C).
© africaexams.com
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