Question

From an aeroplane vertically above a straight horizontal plane, the angles depression of two consecutive kilometer stones on the opposite sides of the aeroplane are found to be a and B. Show that the height of the aeroplane is

of

tan alpha tan bita/tan alpha +tan bita​

Answer 1

Answer:

let P be the position of plane, A and B be the positions of two stones one kilometre apart. Angles of depression of stones A and B are α and β respectively. Let PC = h. In right-angled triangle ACP,

Step-by-step explanation:

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