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If tan^-1 x + tan^-1 2x + tan^-1 3x = p...

If `tan^-1 x + tan^-1 2x + tan^-1 3x = pi`, then:

A

x = 0

B

x = -1

C

x = 1

D

`x in phi`

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PATHFINDER-TRIGONOMETRIC EQUATION AND INVERSE-QUESTION BANK
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  18. If 0 le x le 3pi , 0 le y le 3pi and cos x cdot sin y = 1 , then the p...

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  19. The number of solution of the equation x^3 + x^2 + 4x + 2 sin x = 0 , ...

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