Q. 25.0( 2 Votes )

# Give a condition that three vectors and form the three sides of a triangle. What are the other possibilities?

Answer :

Given that, and are three sides of a triangle.

Hence from the above figure we get,

AB = , BC = and AC =

So

[since]

[Since CA = - AC]

Triangle law says that, if vectors are represented in magnitude and direction by the two sides of a triangle is same order, then their sum is represented by the third side took in reverse order. Thus,

or or

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

(a)

(b)

(c)

(d)

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