Mathematics Part-II

Book: Mathematics Part-II

Chapter: 10. Vector Algebra

Subject: Maths - Class 12th

Q. No. 18 of Exercise 10.2

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





We know by triangle law of vectors,



Hence (B) is true.

We know that

Putting in eq(1), we get


Hence (A) is also true.


Putting in eq(2)

Hence (D) is correct.

We are asked the option which is not true.

Therefore, the correct option is (C).


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