CBSE 12 Science Solutions for MCQ Maths Vector Algebra in English to enable students to get Solutions in a narrative video format for the specific question.
Expert Teacher provides CBSE 12 Science Solutions for MCQ Maths Vector Algebra 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 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 Solution in a narrative video format.
Question:
If a line has direction ratios 2, -1, -2, then what are its direction cosines?
Solution Video in English:
You can select video Solutions from other languages also. Please check Solutions in ( Hindi )
Question 1 : Find the area of the parallelogram whose adjacent sides are determined by the vectors and (View Answer Video)
Question 2 : Find the angle between the vectors and (View Answer Video)
Question 3 : Find a vector of magnitude making an angle of with x-axis, with y-axis and an acute angle with z-axis. (View Answer Video)
Question 4 : Find the unit vector in the direction of vector PQ, where P and Q are the points (1, 2, 3) and (4, 5, 6) respectively. (View Answer Video)
Question 5 : if a, b, c are unit vectors such that a + b + c = 0, then find the value of a.b + b.c + c.a. (View Answer Video)
Question 1 : Evaluate : (View Answer Video)
Question 2 : Write an antiderivative for the function, using the method of inspection. (View Answer Video)
Question 3 : Evaluate : . (View Answer Video)
Question 4 : Find the integral of the function . (View Answer Video)
Question 5 : Find the integral of the function . (View Answer Video)
Question 1 : A bag contains (2n+1) coins. It is known that (n-1) of these coins have a head on both sides, whereas the rest of the coins are fair. A coin is picked up at random from the bag and is tossed. If the probability that the toss results in a head is , determine the value of n. (View Answer Video)
Question 2 : If the mean and variance of a Binomial distribution are 9 and 6 respectively, find the number of trails. (View Answer Video)
Question 3 : Assume that the chances of a patient having a heart attack are 40%. Assume that a meditation and yoga course reduces the risk of heart attack by 30% and the prescription of certain drugs and certain restrictions reduces the risk by 25%. At a time, a patient choses only one of the two options with equal probabilities. After going through one of the two options, the patient is selected at random who is suffering from a heart attack. Find the probability that the patient followed a course of meditation and yoga. Write the value referred here. (View Answer Video)
Question 4 : A die is thrown 6 times. If 'getting an odd number' is a 'success', what is the probability of obtaining:
atleast 5 successes?
(View Answer Video)
Question 5 : If E and F are independent events, then show that and are also independent. (View Answer Video)
Question 1 : The objective function is maximum or minimum, which lies on the boundary of the feasible region. (View Answer Video)