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In Fig., ∠ ...

Question

In Fig., $∠ B A D = 78^{o}, ∠ D C F = x^{o}$ and $∠ D E F = y^{o}$ . Find the values of $x$ and $y$

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Solution

Since $A B C D$ is cyclic quadrilateral .
$∴ x = 78^{o} \Rightarrow y = 180^{o} - 78^{o} = 102^{o}$

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