1.

If tan alpha, tan beta, tan lambda are the roots of the equation x^(3) - px^(2) - r = 0 then the value of (1+tan^(2) alpha) (1+tan^(2) beta)(1+tan^(2)lambda) =

Answer»

`1+(p-r)^(2)`
`2+(p-r)^(2)`
`3+(p+r)^(2)`
`1-(p-r)^(2)`

ANSWER :A


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