If \[x,y,z\] are in A.P. and \[{{\tan }^{-1}}x,{{\tan }^{-1}}y\]and \[{{\tan }^{-1}}z\] are also in A.P., then [Kerala (Engg.) 2005]

If \[x,y,z\] are in A.P. and \[{{\tan }^{-1}}x,{{\tan }^{-1}}y\]and \[

1.	If \[x,y,z\] are in A.P. and \[{{\tan }^{-1}}x,{{\tan }^{-1}}y\]and \[{{\tan }^{-1}}z\] are also in A.P., then [Kerala (Engg.) 2005]
A.	\[x=y=z\]
B.	\[x=y=-z\]
C.	\[x=1;y=2;z=3\]
D.	\[x=2;y=4;z=6\]
E.	\[x=2y=3z\]
Answer» B. \[x=y=-z\]

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If \[x,y,z\] are in A.P. and \[{{\tan }^{-1}}x,{{\tan }^{-1}}y\]and \[{{\tan }^{-1}}z\] are also in A.P., then [Kerala (Engg.) 2005]

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