NCERT Solutions for Class 9 Maths Chapter 12 Heron's Formula Exercise 12.1 Solutions

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NCERT Solutions for Class 9 Maths Chapter 12 Exercise 12.1 Solutions are based on the concept of shapes, like triangles, and their construction methods.

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Exercise Solutions of Class 9 Maths Chapter 12 Heron’s Formula

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CBSE X Related Questions

  • 1.
    The first term of an AP is $p$ and the common difference is $q$, then its 10th term is :

      • $q - 9p$
      • $p - 9q$
      • $p + 9q$
      • $2p + 9q$

    • 2.
      PQ and PR are two tangents to a circle with centre O and radius 5 cm. AB is another tangent to the circle at C which lies on OP. If \(OP = 13\) cm, then find the length AB and PA.


        • 3.
          Prove that :
          \(\frac{\tan \theta}{1 - \cot \theta} + \frac{\cot \theta}{1 - \tan \theta} = 1 + \tan \theta + \cot \theta\).


            • 4.
              If the zeroes of a polynomial p(x) are $-3$ and 8, then p(x) equals

                • $x^2 + 5x - 4$
                • $(x + 3) (-x + 8)$
                • $a(x^2 + 5x - 24)$
                • $x^2 - 24$

              • 5.
                In the figure given above, \(\triangle ABC \sim \triangle XYZ\), then find the values of \(x\) and \(y\).


                  • 6.
                    If the quadratic equation \(9x^2 + 8kx + 16 = 0\) has real and equal roots, then the value of k is

                      • 3
                      • –3
                      • –4
                      • \(\pm 3\)

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