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The expression x+ cosec x-1 x- cosec x+1 is equal to

Options

  1. Ax 1- x
  2. B1- x x
  3. C1+ x x
  4. Dx 1+ x

Correct answer

C. 1+ x x

Step-by-step solution

x+ cosec x- ( cosec ^2 x- ^2 x ) x- cosec x+1 = ( x+ cosec x)(1+ x- cosec x) ( x- cosec x+1) = 1+ x x

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