NDA Maths Mock Test – 01 – Q48

Question:

Let sin-1 x + sin-1 y + sin-1 z = (3π)/(2) for 0 ≤ x, y, z ≤ 1 . What is the value of x1000 + y1001 + z1002 – (9)/(x1000) + y1001 + z1002 ?

Let sin-1 x + sin-1 y + sin-1 z = (3π)/(2) for 0 ≤ x, y, z ≤ 1 . What is the value of x1000 + y1001 + z1002 – (9)/(x1000) + y1001 + z1002 ?

Options:

  • 0
  • 1
  • 3
  • 6
  • 0
  • 1
  • 3
  • 6

Correct Answer: c)

Explanation:

1 Let ‘
‘ sinTl gz + sin ly +sinlz = 3
i Which is only possible, when,
sin”lz = Z,sin’y =,
‘ sinTlz=7%
=x=l,y=landz=1
‘ 1000 p1001 4 1002
i =1+1+1=3
149.

1 Let ‘
‘ sinTl gz + sin ly +sinlz = 3
i Which is only possible, when,
sin”lz = Z,sin’y =,
‘ sinTlz=7%
=x=l,y=landz=1
‘ 1000 p1001 4 1002
i =1+1+1=3
149.

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