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.

    Given that $\sin \theta + \cos \theta = x$, prove that $\sin^4 \theta + \cos^4 \theta = \dfrac{2 - (x^2 - 1)^2}{2}$.


      • 2.

        Directions: In Question Numbers 19 and 20, a statement of Assertion (A) is followed by a statement of Reason (R).
        Choose the correct option from the following:
        (A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
        (B) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
        (C) Assertion (A) is true, but Reason (R) is false.
        (D) Assertion (A) is false, but Reason (R) is true.

        Assertion (A): For any two prime numbers $p$ and $q$, their HCF is 1 and LCM is $p + q$.
        Reason (R): For any two natural numbers, HCF × LCM = product of numbers.

          • Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
          • Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
          • Assertion (A) is true, but Reason (R) is false.
          • Assertion (A) is false, but Reason (R) is true.

        • 3.

          In the adjoining figure, $\triangle CAB$ is a right triangle, right angled at A and $AD \perp BC$. Prove that $\triangle ADB \sim \triangle CDA$. Further, if $BC = 10$ cm and $CD = 2$ cm, find the length of AD.


            • 4.
              Let $p$, $q$ and $r$ be three distinct prime numbers. Check whether $pqr + q$ is a composite number or not. Further, give an example for three distinct primes $p$, $q$, $r$ such that
              (i) $pqr + 1$ is a composite number
              (ii) $pqr + 1$ is a prime number


                • 5.
                  AB and CD are diameters of a circle with centre O and radius 7 cm. If \(\angle BOD = 30^\circ\), then find the area and perimeter of the shaded region.


                    • 6.
                      Check whether the following system of equations is consistent or not. If consistent, solve graphically: \[ x - 2y + 4 = 0, \quad 2x - y - 4 = 0 \]

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