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NDA2019MathematicsInverse Trigonometric FunctionsActual

What is 2 ⁻¹ ( 1 3 ) equal to?

Options

  1. A2 3
  2. B3 4
  3. C3 8
  4. D1 9

Correct answer

B. 3 4

Step-by-step solution

aligned & 2 ⁻¹ ( 1 3 ) & 2 ⁻¹ x= ⁻¹ 2 x 1-x^2 & 2 ⁻¹ ( 1 3 )= ⁻¹ 2 / 3 1-1 / 9 & = ⁻¹ ( 3 4 ) & 2 ⁻¹ ( 1 3 ) = ( 3 4 ) & = 3 4 aligned

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