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प्रश्न
If the height of a tower and the distance of the point of observation from its foot, both, are increased by 10%, then the angle of elevation of its top ____________.
विकल्प
increases
decreases
remains unchanged
have no relation
MCQ
रिक्त स्थान भरें
उत्तर
If the height of a tower and the distance of the point of observation from its foot, both, are increased by 10%, then the angle of elevation of its top remains unchanged.
Explanation:
Since,
`"tan" theta = "h"/"x"`
Where h is height and x is the distance from the tower,
If both are increased by 10%, then the angle will remain unchanged.
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