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[" Wexample is If "sin^(-1)x+sin^(-1)y+s...

[" Wexample is If "sin^(-1)x+sin^(-1)y+sin^(-1)z=pi" ,prove that "],[[" (i) "x sqrt(1-x^(2))+y sqrt(1-y^(2))+z sqrt(1-z^(2))=2xyz-(1)," (1) "],[" (ii) "x^(4)+y^(4)+z^(4)+4x^(2)y^(2)z^(2)=2(x^(2)y^(2)+y^(2)z^(2)+z^(2)x^(2))]]

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