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# CBSE Maths 12 Science MCQ Vector Algebra Solutions in English

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

Expert Teacher provides CBSE Maths 12 Science MCQ Vector Algebra Solutions through Video Solutions 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 Solution in a narrative video format.

Question:

Solution Video in English:

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

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

Question 1 : Find the unit vector in the direction of vector PQ, where P and Q are the points (1, 2, 3) and (4, 5, 6) respectively. (View Answer Video)

Question 2 : If a line has direction ratios 2, -1, -2, then what are its direction cosines?   (View Answer Video)

Question 3 : 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 4 :  Find the scalar quantities from the following:
(i) 10 kg          (ii) 2 m north-west          (iii)

Question 5 : Find the magnitude of two vectors a and b having the same magnitude and such that the angle between them is and their scalar product is 1/2. (View Answer Video)

### Application of Derivatives

Question 1 : The slope of the tangent to the curve:

Question 2 : The rate of change of the area of a circle with respect to its radius r at r = 6 cm is : (View Answer Video)

Question 3 : The approximate change in the volume of a cube of side x meters caused by increasing the side by 3% is _____________. (View Answer Video)

Question 4 : Find two numbers whose sum is 24 and whose product is as large as possible. (View Answer Video)

Question 5 : The volume of a cube is increasing at the rate of 9 cubic centimetres per second. How fast is the surface area increasing when the length of an edge is 10 centimetres? (View Answer Video)

### Matrices

Question 1 : If for any square matrix A,  then write the value of |A|. (View Answer Video)