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COMEDK2018MathematicsTrigonometric Ratios & Identities

If + 4 + 7 = 4 7 then the general solution is

Options

  1. A= n 4
  2. B= n 12
  3. C= n 6
  4. DNone of these

Correct answer

B. = n 12

Step-by-step solution

We have, + 4 + 7 = 4 7 + 4 = 4 7 - 7 + 4 =- 7 (1- 4 ) + 4 1- 4 =- 7 ( +4 )=- 7 5 = (-7 ) 5 =-7 12 =0 or 12 =n So, = n 12 , n I

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