CBSE MCQ Maths 12 Science 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 MCQ Maths 12 Science 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:**

** The equation of a line AB is Write the direction cosines of a line parallel to the above line. **

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

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

**Question 2** : If a line makes angleandwith the coordinate axis, then find the value of (View Answer Video)

**Question 3** : If the lines and are perpendicular to each other, then find the value of P. (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** : If the equation of a line AB is then, find the direction cosines of a line parallel to AB. (View Answer Video)

**Question 1** : Differentiate the function with respect to x. (View Answer Video)

**Question 2** : Using the fact that and the differentiation, obtain the sum formula for cosines. (View Answer Video)

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

**Question 4** : If x and y are connected parametrically by the equation , without eliminating the parameter, find . (View Answer Video)

**Question 5** : If x and y are connected parametrically by the equation , without eliminating the parameter, find . (View Answer Video)

**Question 1** : (View Answer Video)

**Question 2** : Prove that : (View Answer Video)

**Question 3** : Evaluate : (View Answer Video)

**Question 4** : Find:

(View Answer Video)

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

**Question 1** : A coin is biased so that the heads is 2 times as likely to occur as tail. If the coin is tossed twice, find the probability distribution of number of tails. Hence find the mean of the distribution. (View Answer Video)

**Question 2** : A bag contains 4 red and 4 black balls, another bag contains 2 red and 6 black balls. One of the two bags is selected at random and two balls are drawn at random (without replacement) from the bag which are both found to be red. Find the probability that the balls are drawn from the first bag. (View Answer Video)

**Question 3** : A bag contain 2 red, 6 black and 8 green balls. A ball is drawn at random from the bag. Find the probability of black balls:

(View Answer Video)

**Question 4** : A bag X contains 4 white balls and 2 black balls, while another bag Y contains 3 white balls and 3 black balls. Two balls are drawn (without replacement) at random from one of the bags and were found to be one white and one black. Find the probability that the balls were drawn from bag Y. (View Answer Video)

**Question 5** : A coin is tossed three times. Find P(F/E), where E : at most two tails and F : atleast one tail. (View Answer Video)