Find the angles of a cyclic quadrilateral \( A B C D \) in which \( \angle A=(4 x+20)^{\circ} \)... VIDEO
Find the angles of a cyclic quadrilateral \( A B C D \) in which \( \angle A=(4 x+20)^{\circ} \),
(W) \( \angle B=(3 x-5)^{\circ}, \angle C=(4 y)^{\circ} \) and \( \angle D=(7 y+5)^{\circ} \).
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