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Pre Calculus

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Establish the following identity

tan(x+pi/4)=1+tanx/1-tanx

  • Pre Calculus -

    Use the tan (x + y) formula.

    tan(x+y) = (tanx + tany)/(1 - tanx tany)

    with y = pi/4, tany = 1

    Your right hand side should have parentheses

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