NCERT Solutions for Class 10 Maths Chapter 11 Constructions Exercise 11.1

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NCERT Solutions for Class 10 Maths Chapter 11 Constructions Exercise 11.1 Solutions are based on Division of a Line Segment and Solved examples based on the concept. 

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CBSE X Related Questions

1.

A vertical pole of length 6 m casts a shadow 4 m long on the ground and at the same time a tower casts a shadow 28 m long. Find the height of the tower.

      2.

      Solve the following pair of linear equations by the substitution method. 
      (i) x + y = 14 
          x – y = 4   

      (ii) s – t = 3 
          \(\frac{s}{3} + \frac{t}{2}\) =6 

      (iii) 3x – y = 3 
            9x – 3y = 9

      (iv) 0.2x + 0.3y = 1.3 
           0.4x + 0.5y = 2.3 

      (v)\(\sqrt2x\) + \(\sqrt3y\)=0
          \(\sqrt3x\) - \(\sqrt8y\) = 0

      (vi) \(\frac{3x}{2} - \frac{5y}{3}\) =-2,
          \(\frac{ x}{3} + \frac{y}{2}\) = \(\frac{ 13}{6}\)

          3.

          Prove the following identities, where the angles involved are acute angles for which the expressions are defined:\(\frac{(\text{1 + tan² A})}{(\text{1 + cot² A})} = (\frac{\text{1 - tan A }}{\text{ 1 - cot A}})^²= \text{tan² A}\)

              4.
              Check whether \(6n\) can end with the digit \(0\) for any natural number \(n\).

                  5.
                  If 3 cot A = 4, check whether \(\frac{(1-\text{tan}^2 A)}{(1+\text{tan}^2 A)}\) = cos2 A – sinA or not

                      6.
                      A vessel is in the form of an inverted cone. Its height is 8 cm and the radius of its top, which is open, is 5 cm. It is filled with water up to the brim. When lead shots, each of which is a sphere of radius 0.5 cm are dropped into the vessel, one-fourth of the water flows out. Find the number of lead shots dropped in the vessel.

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