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Delta ABC is an equilateral triangle of...

`Delta ABC ` is an equilateral triangle of side 2a units. Find each of its altitudes.

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The correct Answer is:
`a sqrt(3)` units
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RS AGGARWAL-TRIANGLES-Exercise 7D
  1. A man goes 10 m due south and then 24 n due west. How far is from the ...

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  2. A 13-m long ladder reaches a window of building 12 m above the ground....

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  3. A ladder is placd in such a way that its foot is a distance of 15 m fr...

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  4. Two poles of height 9m and 14m stand on a plane ground. If the distanc...

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  5. A guy wire attached to a vertical pole of height 18m is 24m long an...

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  6. In the given figure, O is point inside a Delta PQR such that angle POR...

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  7. In an isosceles triangle A B C , if A B=A C=13 cm and the altitu...

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  8. Find the length of altitude AD of an isosceles Delta ABC in which AB=...

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  9. Delta ABC is an equilateral triangle of side 2a units. Find each of i...

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  10. Find the height of an equilateral triangle of side 12 cm

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  11. Find the length of a diagonal of reactangle whose adjacent sides are 3...

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  12. Find the length of each side of a rhombus whose diagonals are 24 cm an...

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  13. In Delta ABC , D is the midpoint of BC and AE bot BC. If AC gtAB, show...

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  14. In the given figure angleABC=90^(@) and CD bot AB. Prove that (BC^(2)...

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  15. In the given figure, D is the midpoint of side BC and AE bot BC. If BC...

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  16. In Delta ABC, AB= AC. Side BC is produced to D. Prove that (AD^(2)-AC^...

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  17. ABC is an isosceles triangle, right-angled at B. Similar trianles ACD ...

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  18. An aeroplane leaves an airport and flies due north at a speed of 1000...

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  19. In a Delta ABC, AD is a median and AL bot BC. Prove that (a) AC^(2...

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  20. Nazinia is fly fishing in a stream. The tip of her fishing rod is 1...

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