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AP EAMCET2003MathematicsVector Algebra

Let a , b , c be the position vectors of the vertices A, B, C respectively of A B C . The vector area of A B C is :

Options

  1. A1 2 a ( b c )+ b ( c a )+ c ( a b )
  2. B1 2 a b + b c + c a
  3. C1 2 a + b + c
  4. D1 2 ( b c ) a +( c a ) b +( a b ) c

Correct answer

B. 1 2 a b + b c + c a

Step-by-step solution

We have, Area of the triangle = 1 2 a b + b c + c a

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