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UPSC NDA 2 2022 Mathematics Solved Paper

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Consider the following for the next three (03) items that follow :
ABCA B C is a triangular plot with AB=16 mA B=16\ \mathrm{m}, BC=10 mB C=10\ \mathrm{m} and CA=10 mC A=10\ \mathrm{m}. A lamp post is situated at the middle point of the side ABA B. The lamp post subtends an angle 4545^{\circ} at the vertex BB.
[NDA II 2022]
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