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MHT CET202014 Oct 2020Morning ShiftMathematicsTrigonometric EquationsActual

If cosec + =5 , then =

Options

  1. A1 5
  2. B5 26
  3. C5 13
  4. D1 13

Correct answer

C. 5 13

Step-by-step solution

Given cosec + =5 We know that cosec ² - ² =1 ( cosec - )( cosec + )=1 cosec - = 1 5 Adding (1) & (2), we get 2 cosec =5+ 1 5 = 26 5 cosec = 13 5 = 5 13

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