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AP EAMCET201725 Apr 2017Evening ShiftMathematicsStatisticsActual

The mean of numbers a, b, 8,5,10 is 6 and their variance is 6.80. Then Tan ⁻¹ 1 a + Tan ⁻¹ 1 b =

Options

  1. ATan ⁻¹ 7 12
  2. BTan ⁻¹ (- 7 11 )
  3. CTan ⁻¹ 11 7
  4. DTan ⁻¹ 7 11

Correct answer

D. Tan ⁻¹ 7 11

Step-by-step solution

No solution. Refer to answer key.

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