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Manipal MET2012MathematicsTrigonometric Ratios & Identities

In any A B C , the least value of ( ^2 A+ A+1 A ) is

Options

  1. A3
  2. B3
  3. C9
  4. DNone of these

Correct answer

A. 3

Step-by-step solution

aligned & ^2 A+ A+1 A = A+ 1 A +1 & = [ ( A - 1 A )^2+3 ] 3 aligned

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