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JEE Advanced Mathematics question

MathematicsSolution of TrianglesJEE Advanced

Not in JEE syllabus

The area of a cyclic quadrilateral ABCD is . The radius of the circle circumscribing it is 1. If , then is equal to

Answer: (A)

Solution

In the circumcircle (radius 1), chord (A and C are supplementary and both subtend BD). So : or .

**Case , ** (the book's case; from , ). In :

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Question ID VK-108741