EM-3133

Trigonometric ratios

E Math · Secondary 4 · Medium · Trigonometric ratios

A tower stands vertically on horizontal ground. Its height is 150 m. A person walks in a straight line on the ground and at one point is 120 m horizontally from the foot of the tower.

Find the angle of elevation of the top of the tower from this point, correct to 1 decimal place.

$51.3^\circ$
$38.7^\circ$
$50.0^\circ$
$53.1^\circ$

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