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UPSC 2013 CDS 1 Math Paper

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

Question : 54

Total: 100

Congider the following statements:
1. ABCD is a cyclic quadrilateral.
2. 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

Validate

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