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Black Book Advanced Problems in MathematicsMathematicsDeterminants

If vmatrix 1 & cos α & cos β cos α & 1 & cos γ cos β & cos γ & 1 vmatrix = vmatrix 0 & cos α & cos β cos α & 0 & cos γ cos β & cos γ & 0 vmatrix then the value of ^2 + ^2 + ^2 is:

Options

  1. A1
  2. B3/2
  3. C3/8
  4. D9/4

Correct answer

A. 1

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