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BITSAT2011MathematicsTrigonometric Ratios & IdentitiesActual

If, ( A = 1 2 ) and ( B= 1 3 ), then find the value of ( A + B )

Options

  1. A( )
  2. B( 2 )
  3. C( 4 )
  4. D( - 4 )

Correct answer

C. ( 4 )

Step-by-step solution

( aligned & (A+B)= A+ B 1- A B = 1 2 + 1 3 1- 1 2 1 3 =1 & A+B=45^ = 4 aligned )

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