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MHT CET202120 Sep 2021Evening ShiftMathematicsTrigonometric EquationsActual

If x= 25 24 and x lies in first quadrant, then x 2 + x 2 =

Options

  1. A6 5 2
  2. B8 5 2
  3. C7 5 2
  4. D1 5 2

Correct answer

B. 8 5 2

Step-by-step solution

We have x= 24 25 x= 7 25 [ x . lies in 1^ st quadrant ] Also ( x 2 + x 2 )^2=1+ x=1+ 7 25 = 32 25 x 2 + x 2 = 32 25 = 4 2 5 = 8 5 2

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