Vector Algebra MCQ CBSE Maths 12 Science Answers in English to enable students to get Answers in a narrative video format for the specific question.

Expert Teacher provides Vector Algebra MCQ CBSE Maths 12 Science Answers through Video Answers in English language. This video solution will be useful for students to understand how to write an answer in exam in order to score more marks. This teacher uses a narrative style for a question from Vector Algebra not only to explain the proper method of answering question, but deriving right answer too.

Please find the question below and view the Answer in a narrative video format.

** Question:**

** Find |x|, if for a unit vector a,(x - a).(x + a) = 12. **

** Answer Video in** **English****:**

You can select video Answers from other languages also. Please check Answers in ( Hindi )

**Question 1** : Write a unit vector in the direction of the sum of vectors and (View Answer Video)

**Question 2** : Find the area of the triangle with vertices A(1, 1, 2), B(2, 3, 5) and C(1, 5, 5). (View Answer Video)

**Question 3** : Compute the magnitude of the following vectors:

(View Answer Video)

**Question 4** : Find a unit vector in the direction of (View Answer Video)

**Question 5** : Find the scalar and vector components of the vector with initial point (2, 1) and terminal point (-5, 7). (View Answer Video)

**Question 1** : Using integration, find the area of the triangle ABC, where A is (2,3), B is (4,7) and C is (6,2). (View Answer Video)

**Question 2** : Find the area of the region in the first quadrant enclosed by x-axis, line and the circle (View Answer Video)

**Question 3** : Using integration, find the area of the co-ordinates whose vertices are P(2,0), Q(4, 5) and R(6,3). (View Answer Video)

**Question 4** : Using integration, find the area bounded by the tangent to the curve at the point (2, 1) and the lines whose equations are x = 2y and x = 3y - 3. (View Answer Video)

**Question 5** : Find the area of the smaller region bounded by the ellipse and the straight line 8x + 3y = 12. (View Answer Video)

**Question 1** : Matrices A and B will be inverse of each other only if : (View Answer Video)

**Question 2** : If , then find "a". (View Answer Video)

**Question 3** : If, find the value of x. (View Answer Video)

**Question 4** : Find the value of x from the equation: . (View Answer Video)

**Question 5** : Find the value of X, if and . (View Answer Video)

**Question 1** : The objective function is maximum or minimum, which lies on the boundary of the feasible region. (View Answer Video)