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From a point A on the ground , the angle...

From a point A on the ground , the angles of elevation of the top of a 10 m tall building and a helicopter hovering at some height of the building are `30^(@) and 60^(@)` respectively. Find the height of the helicopter above the building

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The correct Answer is:
30 m
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EDUCART PUBLICATION-INTRODUCTION TO TRIGNOMETRY AND ITS APPLICATIONS -LONG ANSWER TYPE QUESTIONS
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