NCERT Solutions for Class 12 Maths Chapter 11 Three Dimensional Geometry Exercise 11.1

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NCERT Solutions for Class 12 Maths Chapter 11 Three-dimensional Geometry Exercise 11.1 is covered in this article. This exercise of Chapter 11 is based on Introduction to Three Dimensional Geometry, The relation between the direction cosines of a line, Direction cosines of a line passing through two points. NCERT Solutions for Class 12 Maths Chapter 11 will carry a weightage of around 7-14 marks in the CBSE Term 2 Exam 2022. NCERT has provided a total of 05 problems and solutions based on the important topics of the exercise.

Download PDF NCERT Solutions for Class 12 Maths Chapter 11 Integrals Exercise 11.1

NCERT Solutions for Class 12 Maths Chapter 11 Important Topics

Important topics covered in the Three-dimensional Geometry Chapter are:

  • Angle between two lines
  • Plane
  • Angle between line and plane
  • Angle between two vectors
  • Coplanarity

Also check: NCERT Solutions for Class 12 Maths Chapter 11 Three-dimensional Geometry 

Other Exercises Solutions of Class 12 Maths Chapter 11 Three-dimensional Geometry

Chapter 11 Three-dimensional Geometry:

CBSE Class 12 Mathematics Study Guides:

CBSE CLASS XII Related Questions

  • 1.
    For a function $f(x)$, which of the following holds true?

      • $\int_a^b f(x) dx = \int_a^b f(a + b - x) dx$
      • $\int_a^b f(x) dx = 0$, if $f$ is an even function
      • $\int_a^b f(x) dx = 2 \int_0^a f(x) dx$, if $f$ is an odd function
      • $\int_0^a f(x) dx = \int_0^a f(2a + x) dx$

    • 2.
      Using integration, find the area of the region bounded by the line \[ y = 5x + 2, \] the \( x \)-axis, and the ordinates \( x = -2 \) and \( x = 2 \).


        • 3.

          A gardener wanted to plant vegetables in his garden. Hence he bought 10 seeds of brinjal plant, 12 seeds of cabbage plant, and 8 seeds of radish plant. The shopkeeper assured him of germination probabilities of brinjal, cabbage, and radish to be 25%, 35%, and 40% respectively. But before he could plant the seeds, they got mixed up in the bag and he had to sow them randomly.

          What is the probability that it is a cabbage seed, given that the chosen seed germinates?


            • 4.

              The given graph illustrates:

                • $y = \tan^{-1} x$
                • $y = \csc^{-1} x$
                • $y = \cot^{-1} x$
                • $y = \sec^{-1} x$

              • 5.
                Let \[ A = \begin{pmatrix} 1 & 4 \\ -2 & 1 \end{pmatrix} \quad \text{and} \quad C = \begin{pmatrix} 3 & 4 & 2 \\ 12 & 16 & 8 \\ -6 & -8 & -4 \end{pmatrix}. \] Then, find the matrix $B$ if $AB = C$.


                  • 6.
                    If \( \mathbf{a} \) and \( \mathbf{b} \) are position vectors of two points \( P \) and \( Q \) respectively, then find the position vector of a point \( R \) in \( QP \) produced such that \[ QR = \frac{3}{2} QP. \]

                      CBSE CLASS XII Previous Year Papers

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