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AP EAMCET2006MathematicsProperties of Triangles

If b+c=3 a , then B 2 C 2 is equal to :

Options

  1. A3
  2. B1
  3. C4
  4. D2

Correct answer

D. 2

Step-by-step solution

B 2 C 2 = s(s-b) (s-c)(s-a) s(s-c) (s-a)(s-b) = s s-a = 2 a 2 a-a =2 ( b+c=3 a)

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