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ICSE Class 10 Answered

from a boat 300m away from a vertical cliff, theangle of elevation of the top and the foot of a vertical concrete pillar at the age of cliff are55degree 40 min  and 54 degree 20min  respectiely find the height of the pillar correct to the nearest metre.explain the meaning please?
Asked by ipranjal01 | 17 Apr, 2018, 12:56: PM
answered-by-expert Expert Answer
Answered by Sneha shidid | 17 Apr, 2018, 02:53: PM

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ICSE 10 - Maths
The angle of elevation of a bird from a point 50 m above the lake is 30(Degree) and the angle of depression of its reflection in the lake is 60(Degree). find the height of the bird above the lake. With the diagram
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ICSE 10 - Maths
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ICSE 10 - Maths
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ICSE 10 - Maths
Two people standing on the same side of a tower in a straight line with it, measure the angles of elevation of the top of the tower as 25° and 50° respectively. If the height of the tower is 70 m, find the distance between the two people.
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ICSE 10 - Maths
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ICSE 10 - Maths
an aeroplane at an altitude of 250m observes the angle of depression of two boats on opposite banks of a river to be 45 degree and 60 degree respectively find width of river(please include diagram and explaination to each step)
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ICSE 10 - Maths
a man on the bank of a stream observes a tree on the opposite bank exactly across the stream he finds the angle of elevation of the top of the tree to be 45. on receding perpendicularly a distance of 4m from the bank, he finds that the angle of elevation reduces by 15 .is this information sufficient for the man to determine the height of the tree and the width of the stream? if so, find them.    heights and distance
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ICSE 10 - Maths
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