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To find the width the river, a man obser...

To find the width the river, a man observes the top of a tower on the opposite bank making an angle of elevation `61^(@)`. When he moves `50m` backward from bank and observes the same top of the tower, his line of vision makes an angle of elevationfo `35^(@)`. Find the height of the tower and width of the river. `(tan 61^(@)=1.8, 35^(@)=0.7)`

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The correct Answer is:
Width = 31.82, height = 57.28m
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To find the width the river, a man observes the top of a tower on the opposite bank making an angle of elevation 61^(@) . When he moves 50m backward from bank and observes the same top of the tower, his line of vision makes an angle of elevationfo 35^(@) . Find the height of the tower and width of the river. (tan 61^(@)=1.8, tan35^(@)=0.7)

A person standing on the bank of a river observes that the angle of elevation of the top of a tree standing on the opposite bank is 60^(@) . When he moves 40 m away from the bank, he finds the angle of elevation to be 30^(@) . Find the height of the tree and width of the river. (sqrt3 =1.73)

A person standing on the bank of a river observes that the angle of elevation of the top of a tree standing on the opposite bank is 60^(@) . When he moves 40 m away from the bank, he finds the angle of elevation to be 30^(@) . Find the height of the tree and the width of the river. (sqrt3=1.73)

A person standing on the bank of a river observes that the angle of elevation of the top of a tree standing on the opposite bank is 60^(@) . When he moves 40 meter away from the bank, he finds the angle of elevation to be 30^(@) . Find the height of the tree and width of the river " [take", sqrt(3)=1.732]

A person standing on the bank of a river observes that the angle of elevation of the top of a tree standing on the opposite bank is 60^(@) . When he move 40metres away from the bank, he finds the angle of elevation to be 30^(@). Find the height of the tree and the width of the river.

The angle of elevation of the top of a tower from a point 40 m away from its foot is 60^(@) . Find the height of the tower.

From the top of a 10 m high building, the angle of elevation of the top of a tower is 60^@ and the angle of depression of its foot is 45^@ . Find the height of the tower

A person observed the angle of elevation of the top of a tower as 30o. He walked 50m towards the foot of the tower along level ground and found the angle of elevation of the top of the tower as 60o. Find the height of the tower.

The angle of elevation from a point on the bank angle of the top of temple on the other bank is 45^(@) Retreating 50m the observer finds the new angle of elevation is 30^(@). What is the width of the river

The angle of elevation of the top of a tower from the foot of a house, situated at a distance of 20 m from the tower is 60^(@) . From the top of the top of the house the angle of elevation of the top of the tower os 45^(@) . Find the height of house and tower.

UNIQUE PUBLICATION-TRIGONOMETRY-UNIQUE PRACTICE SESSION
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  2. If tan theta=1, then (sin theta+cos theta)/(sec theta+cosec theta)=

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  3. त्रिकोणमितीय सर्वसमिकाओं को सिद्ध करो : (1)/(cosec A- cot A )-(1)/(s...

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  4. Prove that sqrt((1+sintheta)/(1-sintheta))=sectheta+tantheta

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  5. The length of the shadow of a tower standing on level plane is foun...

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  6. A circus artist is climbing from the ground along a rope stretched ...

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  9. The angle of elevation of a jet plane from a point A on the grund is 6...

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  10. Prove that : (tan theta)/(sec theta -1) + (tan theta)/(sec theta + 1...

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  11. Prove that (1+tan theta )^2 + (1+cot theta)^2 = (sec theta + cosec t...

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  12. Prove that (1 + 1/(tan^2A)) (1 + 1/(cot^2A)) = 1/(sin^2 A - sin^4 A )

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  13. Prove that: (sectheta-1)/(sectheta+1)=((sintheta)/(1+costheta))^2

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  14. Two buildings are in front of each other on either side of a road of w...

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  15. If 5 sin theta - 12 cos theta = 0 , find the values of sec theta and c...

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  16. To find the width the river, a man observes the top of a tower on the ...

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  17. Eliminate theta if x=a cot theta -b cosec theta and y=acot theta+b cos...

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  18. If cos theta=(sqrt(3))/2 then find the value of (1-sec theta)/(1+cosec...

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  19. Roshani saw an eagle on the to of a tree at an angle of elevation of 6...

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  20. A tree breaks due to storm and the broken part bends so that the to...

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