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AP EAMCET2016MathematicsTrigonometric Equations

If (1+ )(1+ 4 )=2, (0, 16 ) , then is equal to

Options

  1. A20
  2. B30
  3. C40
  4. D60

Correct answer

A. 20

Step-by-step solution

aligned & Given that (1+ )(1+ 4 )=2, (0, 16 ) & 1+ + 4 + 4 =2 & + 4 =1- 4 & + 4 1- + 4 =1 & ( +4 )=1 & 5 = 4 & 5 = 4 = 20 aligned

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