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UPSC 2013 CDS 1 Math Paper

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Directions : Consider teh folowing for the next four (04) questions that folllow:

The angles A, B, C, D of the quadrilateral ABCD are in the ratio

1:2:4:5

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Question : 54 of 100

Marks: +1, -0

Congider the following statements:

1. ABCD is a cyclic quadrilateral.

\sin (B-A)=\cos (D-C)

Which of the above statements is/are correct?

1 only
2 only
Both 1 and 2
Neither 1 nor 2

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