1.

A man standing in one corner of a square football field observes that the angle subtended bya pole in the corner just diagonally opposite to this corner is 60^@. Whenhe retires 80 m from the corner, along the same straight line, he finds the angle to be 30^@. The length of the field is

Answer»

a)20 m
b)`40 SQRT 2m`
C)`40 m `
d)`20 sqrt 2m`

ANSWER :C


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