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

Expert Teacher provides Vector Algebra 12 Science Maths CBSE Answers for MCQ 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 a vector in the direction of that has magnitude 7 units. **

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

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(
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## Similar Questions from CBSE, 12th Science, Maths, Vector Algebra

**Question 1** : If a line has direction ratios 2, -1, -2, then what are its direction cosines?

**Question 2** : Find the value of x and y so that the vectors and are equal.

**Question 3** : Find the scalar and vector components of the vector with initial point (2, 1) and terminal point (-5, 7).

**Question 4** : Find the unit vector in the direction of the vector

**Question 5** : Find a vector in the direction of that has magnitude 7 units.

### Questions from Other Chapters of CBSE, 12th Science, Maths

### Application of Derivatives

**Question 1** : Find the maximum profit that a company can make if the profit function is.

**Question 2** : The normal at the point (1, 1) on the curve is:

**Question 3** : Find two numbers whose sum is 24 and whose product is as large as possible.

**Question 4** : The normal at the point (1,1) on the curve is

**Question 5** : If the radius of a sphere is measured as 9 m with an error of 0.03 m, then find the approximate error in calculating its surface area.

### Relations and Functions

**Question 1** : Let * be the binary operation on N given by a * b = LCM of a and b. Find 20 * 16.

**Question 2** : Functions are defined respectively, by , find .

**Question 3** : Let * be the binary operation on N given by a * b = LCM of a and b. Find the identity of * in N?

**Question 4** : Let A = {1, 2, 3}. Then, number of equivalence relations containing (1, 2) is,

**Question 5** : Let * be the binary operation on N given by a * b = LCM of a and b. Find 5 * 7.

### Application of Integrals

**Question 1** : Using the method of integration, find the area of the triangular region whose vertices are (2, -2), (4, 3) and (1, 2).

**Question 2** : Using the method of integration, find the area of the region bounded by the lines: 5x - 2y -10 = 0, x + y - 9 = 0 and 2x - 5y - 4 = 0.

**Question 3** : Find the area of the region .

**Question 4** :

Find the area of the given curves and given lines:

and x-axis

**Question 5** : Using integration find the area of the triangular region whose sides have the equations y = 2x + 1, y = 3x + 1 and x = 4.