if tan -1(1)+tan-1(x)=0then x
a 0
b 1/2
c Pai/4
d -1​

1 thought on “if tan -1(1)+tan-1(x)=0then x<br />a 0<br />b 1/2<br />c Pai/4<br />d -1​”

1. Answer:

   1/(1-a)(1-b)( 1-c)+1/(1-b) (1-c) (1-d)+1/(1-c)

   (1-d) (1-a)+1/(1-d)( 1-b) (1-a) .

   By taking LCM,

   =4-[a+b+c+d] / [1-a][1-b][1-c][1-d]

   =4-4 / [1-a][1-b][1-c][1-d]

   =0

   Step-by-step explanation:

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