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KVPY2015MathematicsTrigonometric Equations

The number of real numbers for which the equality ( ) - ( ) = -1 , holds for all real which are not integral multiples of / 2 is

Options

  1. A1
  2. B2
  3. C3
  4. DInfinite

Correct answer

B. 2

Step-by-step solution

( ) - ( ) = -1 - =( -1) ( - )= ( -1) 2 2 so = =1 ; 3

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