Q. 185.0( 1 Vote )

# Given that vector

Answer :

Given: and   Substituting the values of the given vectors in  Comparing both sides, we get

p = s + 3; q = 4; r = 2

Formula: area of triangle =      (s + 11) (s - 5) = 0

s = 11 or s = 5

therefore p = - 8 or p = 8

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