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 show that x=y=z and y≠0

If x,y,z are in AP and tan^(-1)x,tan^(-1)y,tan^(-1)z are also in AP, then

If x, y, z are in A.P. and t a n^(-1)x ,""t a n^(-1)y"" and ""t a n^(-1)z are also in A.P., then (1) 2x""=""3y""=""6z (2) 6x""=""3y""=""2z (3) 6x""=""4y""=""3z (4) x""=""y""=""z

If x ,y,z are in A.P. show that (xy)^(-1) , (zx)^(-1) , (yz)^(-1) are also in A.P.

If xy +yz+zx=1 then tan^(-1)x+tan^(-1)y+tan^(-1)z =

If x+y+z=xyz , then tan^(-1)x+tan^(-1)y+tan^(-1)z=

If tan^(-1) x + tan^(-1)y + tan^(-1)z= pi then x + y + z is equal to

If a, b, c are in G.P. and a^(1/x)=b^(1/y)=c^(1/z), prove that x, y, z are in A.P.

If x,y,z, are in A.P. and x^(2),y^(2),z^(2) are in H.P., then which of the following is correct ?

6. If tan^(−1)(1−x),tan^(−1)(x) and tan^(−1)(1+x) are in A.P., then the value of x^3+x^2 is equal to

If "tan"(x-y)/(2)," tan z, tan"(x+y)/(2) are in G.P., then show that cosx=cosy*cos2z .