1.

A vertical lamp foot of height 10m stands at the corner of the rectangular field. The angle of elevation of its top from the farthest corner is 30∘ while from one of the other two corners it is 45∘, then the area of the field is

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A vertical lamp foot of height 10m stands at the corner of the rectangular field. The angle of elevation of its top from the farthest corner is 30∘ while from one of the other two corners it is 45∘, then the area of the field is



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