The angle of elevation of an aeroplane as observed from a point 30 met – McqOptions

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1.	The angle of elevation of an aeroplane as observed from a point 30 metre above the transparent water-surface of a lake is 30 and the angle of depression of the image of the aeroplane in the water of the lake is 60 . The height of the aeroplane from the water-surface of the lake is
A.	60 metre
B.	45 metre
C.	50 metre
D.	75 metre
Answer» B. 45 metre

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