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tan^(-1)n+tan^(-1)y+tan^(-1)z...

tan^(-1)n+tan^(-1)y+tan^(-1)z

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" (a) "tan^(-1)x+tan^(-1)y+tan^(-1)z=tan^(-1)(x+y+z-xyz)/(1-xy-yz-zx)

Prove that tan^(-1)x+tan^(-1)y+tan^(-1)z=tan^(-1)((x+y+z-xyz)/(1-xy-yz-zx))

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

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

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

If tan^(-1)x+tan^(-1)y+tan^(-1)z=pi, show that x + y + z = xyz.

If x+y+z=xyz, then what is the value of tan^(-1)x+tan^(-1)y+tan^(-1)z ?

Prove the followings : If tan^(-1)x+tan^(-1)y+tan^(-1)z=pi then x+y+z=xyz .