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Eamcet Mathematics
Trigonometry Inverse Trigonometric Functions

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If tan^-1 x + tan^-1 y + tan^-1 z = π/2, then

A. x+y+z-xyz=0

B. x+y+z+xyz=0

C. xy+yz+zx-1=0

D. xy+yz+zx+1=0

E. None of the above

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Correct choice: C

Explanation:

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Eamcet Mathematics Trigonometry Inverse Trigonometric Functions

Eamcet Mathematics
Trigonometry Inverse Trigonometric Functions