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MHT CET202012 Oct 2020Morning ShiftMathematicsTrigonometric EquationsActual

If x+ x=3, x (0, 2 ) then, x=

Options

  1. A3 5
  2. B4 5
  3. C-1
  4. D1 5

Correct answer

B. 4 5

Step-by-step solution

We have x+ x=3 ...(1) We know that ² x- ² x=1 ( x- x)( x+ x)=1 x- x= 1 3 ...(2) Adding (1) and (2) 2 x= 10 3 x= 5 3 x= 3 5 x= 1- ² x = 4 5

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