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

Expert Teacher provides CBSE MCQ Solutions for Maths 12 Science Three Dimensional Geometry 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 Three Dimensional Geometry 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:**

** If a line marks angles and with x, y and z-axis respectively, where is acute, then find . **

** Solution Video in** **English****:**

**Question 1** : Find the angle between the lines and (View Answer Video)

**Question 2** : If a line marks angles and with x, y and z-axis respectively, where is acute, then find . (View Answer Video)

**Question 3** : If the cartesian equations of a line are write the vector equation for the line. (View Answer Video)

**Question 4** : Find the equation of the plane passing through the point (-1, 3, 2) and perpendicular to each of the planes x + 2y + 3z = 5 and 3x + 3y + z = 0. (View Answer Video)

**Question 5** : Find the distance of the point from the plane 3x + y - z + 2+0 measured parallel to the line Also, find the foot of the perpendicular from the given point upon the given plane. (View Answer Video)

**Question 1** : Given, , find the value of z. (View Answer Video)

**Question 2** : Matrices A and B will be inverse of each other only if : (View Answer Video)

**Question 3** : Let Find AB. (View Answer Video)

**Question 4** : Find the transpose of the matrix: . (View Answer Video)

**Question 5** : Compute: . (View Answer Video)

**Question 1** : Functions are defined respectively, by , find . (View Answer Video)

**Question 2** : Functions are defined respectively, by , find . (View Answer Video)

**Question 3** : If f is the greatest integer function and g is the modulus function . Write the value of g o f(-1/3) – f o g ( -1/3 ). (View Answer Video)

**Question 4** : Let * be the binary operation on N given by a * b = LCM of a and b. Find 20 * 16. (View Answer Video)

**Question 5** : Let * be any binary operation on the set R defined by a * b = a + b – ab, then the binary operation * is, (View Answer Video)

**Question 1** : Five bad oranges are accidently mixed with 20 good ones. If four oranges are drawn one by one successively with replacement, then find the probability distribution of number of bad oranges drawn. Hence, find the mean and variance of the distribution. (View Answer Video)

**Question 2** : Four cards are drawn successively with replacement from a well shuffled deck of 52 cards. What is the probability that:

Only 2 cards are spades? (View Answer Video)

**Question 3** : If A and B are two events such that P(A)=0.3, P(B)=0.6 and P(B/A)=0.5, find P(AB). (View Answer Video)

**Question 4** : An insurance company insured 2,000 cyclists, 4,000 scooter drivers and 6,000 motorbike drivers. The probability of an accident involving a cyclist, scooter driver and a motorbike driver are 0.01, 0.03, and 0.15 respectively. One of the insured persons meets with an accident. What is the probability that he is a scooter driver? (View Answer Video)

**Question 5** : In a hockey match, both teams A and B scored same number of goals up to the end of the game, so to decide the winner, the referee asked both the captains to throw a die alternately and decided that the team, whose captain gets a six first, will be declared the winner. If the captain of the team A was asked to start, find their respective probabilities of winning the match and state whether the decision of the referee was fair or not. (View Answer Video)