" 1."Tan^(-1)((x)/(y))-Tan^(-1)((x-y)/(x+y))" is equal to "

If xgt0x,ygt0 and x gty then tan^(-1){(x)/(y)}+tan^(-1){(x+y)/(x-y)} is equal to

Prove that tan^(-1)((x)/(y))-tan^(-1)((x-y)/(x+y)) is (pi)/(4) and Not(-3 pi)/(4)

tan^(-1)x+tan^(-1)y is equal to

x=4tan^(-1)((1)/(5)),y=tan^(-1)((1)/(70)) z=tan^(-1)((1)/(99)) What is x equal to?

Find the value of tan^(-1)((x)/(y))-tan^(-1)((x-y)/(x+y))

Find the value of tan^(-1)((x)/(y))-tan^(-1)((x-y)/(x+y))

The solution of (dy)/(dx)=((x-1)^(2)+(y-2)^(2)tan^(-1)((y-2)/(x-1)))/((xy-2x-y+2)tan^(-1)((y-2)/(x-1))) is equal to

If 2tan^(- 1)(c o s e c(tan^(- 1)(x))-tan(cot^(- 1)(x)))=tan^(- 1)y then y is equal to

tan^(-1)x+tan^(-1)y=pi+tan^(-1)((x+y)/(1-xy))