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NDA2012MathematicsInverse Trigonometric FunctionsActual

What is [ ⁻¹ ( 3 4 )+ ⁻¹ ( 4 5 ) ] equal to?

Options

  1. A0
  2. B1 2
  3. C1
  4. D2

Correct answer

C. 1

Step-by-step solution

[ ⁻¹ ( 3 5 )+ ⁻¹ ( 4 5 ) ]= [ ⁻¹ ( 3 5 )+ ⁻¹ ( 3 5 ) ] [ ⁻¹ x+ ⁻¹ x= 2 ]= [ 2 ]=1

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