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Math

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Could someone explain the steps for this question.

Simplify the expression

tan(5pi/8)-tan(3pi/8)/1+tan(5pi/8)tan(3pi/8)

  • Math -

    Options are

    a) 0
    b) 1
    c) -1
    d) undefined

  • Math -

    Recall your sum/difference formulas. You have

    tan(5pi/8-3pi/8) = tan(pi/4)
    so, (B)

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