Mathematics Part-II

Book: Mathematics Part-II

Chapter: 10. Vector Algebra

Subject: Maths - Class 12th

Q. No. 18 of Exercise 10.2

Listen NCERT Audio Books - Kitabein Ab Bolengi

18

In triangle ABC (Fig 10.18), which of the following is not true:


(a)


(b)


(c)


(d)

We know by triangle law of vectors,


…………..(1)


Therefore,


Hence (B) is true.


We know that


Putting in eq(1), we get



…….(2)


Hence (A) is also true.


Now,


Putting in eq(2)



Hence (D) is correct.


We are asked the option which is not true.


Therefore, the correct option is (C).


18

Chapter Exercises

More Exercise Questions