If cos -1 x-cos -1 y-cos -1 z-3 - then the value of x y-y z-z x-

As nbsp;we nbsp;know nbsp;that nbsp;cos 1 nbsp;function nbsp;is nbsp;in nbsp;range nbsp;0, nbsp;π.Hence nbsp;from nbsp;the nbsp;equati ...

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General Solutions of (sin theta)^2 = (sin alpha)^2 , (cos theta)^2 = (cos alpha)^2 , (tan theta)^2 = (tan alpha)^2

If cos -1 x+c...

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$If {cos}^{- 1} x + {cos}^{- 1} y + {cos}^{- 1} z = 3 π,$ then the value of $x y + y z + z x$ =

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c o s^{- 1} x + c o s^{- 1} y + c o s^{- 1} z = 3 π t h e n x^{2} + y^{2} + z^{2} - x y - y z - z x

{cos}^{- 1} x + {cos}^{- 1} y + {cos}^{- 1} z = 3 π

\sum x y

{sec}^{- 1} x + {sec}^{- 1} y + {sec}^{- 1} z = 3 π

x y + y z + z x =

{cos}^{- 1} x + {cos}^{- 1} y + {cos}^{- 1} z = 3 π,

x^{3} + y^{3} + z^{3} - 3 x y z

{s i n}^{- 1} x, {c o s}^{- 1} x, {t a n}^{- 1} x

{t a n}^{- 1} x + {t a n}^{- 1} y = {t a n}^{- 1} \frac{x + y}{1 - x y}

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{c o s}^{- 1} p + {c o s}^{- 1} q + {c o s}^{- 1} r = π

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x^{4} + y^{4} + z^{4} + 4 x^{2} y^{2} z^{2} = 2 (x^{2} y^{2} + y^{2} z^{2} + z^{2} x^{2})

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π / 2

x + y + z = x y z

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