If x-y-z-2- show that sin2x-sin2y-sin2z-1-2sin xsin y sin z-

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Modulus of a Complex Number

If x+y+z=π/...

Question

If $x + y + z = π / 2$ , show that ${sin}^{2} x + {sin}^{2} y + {sin}^{2} z = 1 - 2 sin x sin y sin z$ .

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