CBSE Maths 12 Science MCQ Three Dimensional Geometry 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 Three Dimensional Geometry 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 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:**

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

**Question 1** : If a line has the direction ratios -18, 12, -4, then what are its direction cosines? (View Answer Video)

**Question 2** : If a lines makes angle and with the positive directions of x-axis and z-axis respectively, then find the angle that it makes with the y-axis. (View Answer Video)

**Question 3** : Find the co-ordinates of the point where the line through the points A (3, 4, 1) and B (5, 1, 6) crosses the XY-plane. (View Answer Video)

**Question 4** : Find the co-ordinates of the point, where the line intersects the plane x-y+z-5=0. Also find the angle between the line and the plane. (View Answer Video)

**Question 5** : Find the vector equation of the plane which is at a distance of 5 units from the origin and normal to the plane 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** : In a game, a man wins rupee five for number six and losses rupee one for any other number, when a fair die is thrown. The man decided to throw a die thrice but to quit as and when he gets a six. Find the expected value of the amount he wins/losses. (View Answer Video)

**Question 3** : A box contains 50 bolts and 50 nuts. Half of the bolts and nuts are rusted. If two items are drawn with replacement, what is the probability that either both are rusted or both are bolts. (View Answer Video)

**Question 4** : One card is drawn from a pack of 52 cards. Find the probability of getting a king (View Answer Video)

**Question 5** : If and then find . (View Answer Video)

**Question 1** : Find the inverse of the matrix . (View Answer Video)

**Question 2** : Let A be a non-singular square matrix of order 3 * 3. Then | adj A | is equal to: (View Answer Video)

**Question 3** : Find the value of k, if the area of the triangle is 4 sq unit and vertices are (k, 0) (4, 0) (0, 2). (View Answer Video)

**Question 4** : The following system of equations has x + 3y + 3z = 2, x + 4y + 3z = 1, x + 3y + 4z = 2,

(View Answer Video)

**Question 5** : Find the area of the triangle with vertices at the points (-2, -3), (3, 2), (-1, -8). (View Answer Video)

**Question 1** : Find the area enclosed by the parabola and the line 2y = 3x + 12. (View Answer Video)

**Question 2** : Given that , for x = 0 to x = 20. Find f(x) and g(x) such that the area between f(x) and from x = 0 to x = 5 be and area between g(x) and from y = 0 to y = 5 be . Is = ? Like functions f and g which work is better, team work or individual work? (View Answer Video)

**Question 3** : Using integration, find the area of the region bounded by the line 2x + y = 4, 3x - 2y = 6 and x - 3y + 5 = 0. (View Answer Video)

**Question 4** : Using the method of integration, find the area of the region bounded by the lines 3x - 2y + 1 = 0, 2x + 3y -21 = 0 and x - 5y + 9 = 0. (View Answer Video)

**Question 5** : Using the method of integration find the area bounded by the curve |x| + |y| = 1. (View Answer Video)