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

Expert Teacher provides CBSE Three Dimensional Geometry Maths 12 Science Answers for MCQ 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 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 Answer in a narrative video format.

** Question:**

** If a line has direction ratios 2, -1, -2, then what are its direction cosines? **

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

**Question 1** : 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. Also find angle which this line makes with the XZ-plane. (View Answer Video)

**Question 2** : Find the distance of the point (3, 4, 5) from the plane x + y + z = 2 measured parallel to the line 2x = y = z. (View Answer Video)

**Question 3** : Find the distance of the point (-1, -5, -10) from the point of intersection of the line and plane (View Answer Video)

**Question 4** : Find the equation of the plane with intercept 3 on the y-axis and parallel to ZOX plane. (View Answer Video)

**Question 5** : 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 1** : Area lying in the first quadrant and bounded by the circle and the lines x =0 and x = 2 is (View Answer Video)

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

**Question 3** : Using integration find the area of region bounded by the triangle whose vertices are (-1, 0), (1, 3) and (3, 2). (View Answer Video)

**Question 4** : Using integration, find the area bounded by the tangent to the curve at the point (2, 1) and the lines whose equations are x = 2y and x = 3y - 3. (View Answer Video)

**Question 5** : Find the area bounded by curves . (View Answer Video)

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

**Question 2** : Obtain the differential equation of the family of circles passing through the points (a, 0) and (-a, 0). (View Answer Video)

**Question 3** : If m and n are the order and degree, respectively of the differential equation then write value of m+n. (View Answer Video)

**Question 4** : Find the particular solution of the differential equation :

when x = 1, (View Answer Video)

**Question 5** : Solve the differential equation (View Answer Video)

**Question 1** : The line y = x + 1 is a tangent to the curve at the point: (View Answer Video)

**Question 2** : The total revenue in rupees received from the sale of x units of a product is given by . The marginal revenue, when x=15 is: (View Answer Video)

**Question 3** : Find the maximum profit that a company can make if the profit function is. (View Answer Video)

**Question 4** : The maximum value of is, (View Answer Video)

**Question 5** : The normal at the point (1, 1) on the curve is: (View Answer Video)