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

Expert Teacher provides CBSE Maths 12 Science Vector Algebra MCQ 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:**

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

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

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

**Question 4** : If a line has direction ratios 2, -1, -2, then what are its direction cosines? (View Answer Video)

**Question 5** : Find a vector in the direction of vector which has magnitude 8 unit. (View Answer Video)

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

**Question 1** : Three cards are drawn without replacement from a pack of 52 cards. Find the probability that the cards drawn are king, queen and jack.

(View Answer Video)

**Question 2** : If P(A)=, P(B)= and =, find . (View Answer Video)

**Question 3** : If E and F are two events such that,

, Find P(E or F). (View Answer Video)

**Question 4** : A and B throw a pair of dice alternately. A wins the game if he gets a total of 7 and B wins the game if he gets a total of 10. If A starts the game, the find the probability that B wins. (View Answer Video)

**Question 5** : There are three coins. One is a two-headed coin (having head on both faces), another is a biased coin that comes up heads 75% of the times and third is also a biased coin that comes up tails 40% of the times. One of the three coins is chosen at random and tossed, and it shows heads. What is the probability that it was the two-headed coin? (View Answer Video)

**Question 1** : Find the general solution of differential equation (View Answer Video)

**Question 2** : If x cos(a + y) = cos y, then prove that

Hence show that (View Answer Video)

**Question 3** : Find the differential equation of the family of lines passing through the origin. (View Answer Video)

**Question 4** : Write the degree of the differential equation : (View Answer Video)

**Question 5** : If m and n are the order and degree, respectively of the differential equation then write value of m+n. (View Answer Video)