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MHT CET202013 Oct 2020Morning ShiftMathematicsTrigonometric Ratios & IdentitiesActual

If = 1 3 , then 2 =

Options

  1. A1 4
  2. B1 10
  3. C1 5
  4. D4 5

Correct answer

D. 4 5

Step-by-step solution

2 = 1- ² 1+ ² = (1- 1 9 ) (1+ 1 9 ) = 4 5

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