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COMEDK2015MathematicsInverse Trigonometric Functions

If (x+y)=33 and x= ⁻¹ 3 , then y is

Options

  1. A3 10
  2. B33 10
  3. C⁻¹ ( 1 3 )
  4. D⁻¹ ( 3 10 )

Correct answer

D. ⁻¹ ( 3 10 )

Step-by-step solution

We have, (x+y)=33 aligned & x+ y 1- x y =33 & 3+ y 1-3 y =33 [ x= ⁻¹ 3 x=3 ] & 3+ y=33-99 y & 100 y=30 & y= 3 10 & y= ⁻¹ 3 10 aligned

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