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Prove that : tan 20^0 tan 40^0 tan 60^0 ...

Prove that : `tan 20^0 tan 40^0 tan 60^0 tan 80^0 =3`

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Prove that: tan20^(@)tan40^(@)tan60^(@)tan80^(@)=3

Prove that tan20^(@)tan40^(@)tan80^(@)=tan60^(@)

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  • tan20^(@)tan40^(@)tan60^(@)tan80^(@)=?

    A
    1
    B
    2
    C
    3
    D
    `sqrt(3)/(2)`

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