Math

Could someone explain the steps for this question.

Simplify the expression

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

  1. 👍
  2. 👎
  3. 👁
  1. Options are

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

    1. 👍
    2. 👎
  2. Recall your sum/difference formulas. You have

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

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