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प्रश्न
A tower stands vertically on the ground. From a point on the ground, which is 30 m away from the foot of the tower, the angle of elevation of the top of the tower is found to be 30°. Find the height of the tower.
विकल्प
10 m
`10 sqrt3 "m"`
`30 sqrt3 "m"`
30 m
MCQ
उत्तर
`10 sqrt3 "m"`
Explanation:
The given situation can be represented by the Δ below
Now, `"tan" 30^circ = "AB"/"BC"`
`=> 1/sqrt3 = "AB"/30`
`=> 10 sqrt3 = "AB"`
`therefore "Heights of tower is" 10 sqrt3 "m"`
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