The angle of elevation of the top T of a vertical

Question

The angle of elevation of the top T of a vertical tower TA from point B on the ground is 60° . from a point C , 40 m vertically above the point B , angle of elevation is 30° Find the height of the tower & the distance between the points A & B.

Neelesh Kumar · Accepted Answer

first a fall construct the diagramlet TA-BC=XNOW tan60 = (BC+(TA-BC))/AB................................(1)SIMILARLY tan30 = (TA-BC)/AB.................................(2)FROM equation..2... AB =X * root3...............tan 30 =1/root3.......................(3)from equation ..1…....AB(root3) = 40 + X.............................(4)from eq 3 put value of AB into eq 4we get3(X) = 40 + X2(X) = 40X=20THEN HEIGHT OF TOWER BEX+ 4020+40=60AND DISTANCE B/W AB =20(root3)

Trigonometry> The angle of elevation of the top T of a ...

The angle of elevation of the top T of a vertical tower TA from point B on the ground is 60° . from a point C , 40 m vertically above the point B , angle of elevation is 30° Find the height of the tower & the distance between the points A & B.

tupare Mahadev , 7 Years ago

Neelesh Kumar

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Trigonometry> The angle of elevation of the top T of a ...

The angle of elevation of the top T of a vertical tower TA from point B on the ground is 60° . from a point C , 40 m vertically above the point B , angle of elevation is 30° Find the height of the tower & the distance between the points A & B.

tupare Mahadev , 7 Years ago

Neelesh Kumar

Provide a better Answer & Earn Cool Goodies

LIVE ONLINE CLASSES

Ask a Doubt

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