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Question
In an isosceles ΔАBC, if AC = BC and AB2 = 2AC2 then C = ?
Options
30°
45°
60°
90°
MCQ
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Solution
90°
Explanation:
AB2 = 2AC2
= AC2 + AC2
= BC2 + AC2 ...[∵ AC = BC]
∴ By converse of Pythagoras' theorem, we have ∠C = 90°.
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